EAGLE GEOPHYSICAL INC
8-K, 1998-08-25
OIL & GAS FIELD EXPLORATION SERVICES
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   ----------

                                    FORM 8-K

                                 CURRENT REPORT
                Pursuant to Section 13 or 15(d) of the Securities
                              Exchange Act of 1934

                                   ----------

                                 AUGUST 24, 1998
                                (Date of Report)

                             EAGLE GEOPHYSICAL, INC.
             (Exact name of registrant as specified in its charter)


   DELAWARE                        000-22863                   76-0522659
(State or other                   (Commission               (I.R.S. Employer
jurisdiction of                   File Number)             Identification No.)
 incorporation)




                              50 BRIAR HOLLOW LANE
                                 6TH FLOOR WEST
                              HOUSTON, TEXAS 77027
               (Address of principal executive offices) (Zip Code)

                                 (713) 881-2800
                         (Registrant's telephone number,
                              including area code)

                                 NOT APPLICABLE
          (Former name or former address, if changed since last report)

<PAGE>   2

         ITEM 5.         OTHER EVENTS

         On August 4, 1998, the Board of Directors of Eagle Geophysical, Inc.
(the "Company") declared a dividend of one preferred share purchase right (a
"Right") for each outstanding share of common stock, par value $.01 per share
(the "Common Stock"), of the Company. The dividend is payable on August 31, 1998
(the "Record Date"), to the stockholders of record on that date. Each Right
entitles the registered holder to purchase from the Company one one-thousandth
of a share of Series A Junior Participating Preferred Stock, $.01 par value per
share (the "Series A Preferred Stock"), of the Company at a price of $46 per one
one-thousandth of a share of Series A Preferred Stock (the "Purchase Price"),
subject to adjustment. The complete description and terms of the Rights are set
forth in a Rights Agreement dated as of August 24, 1998, as the same may be
amended from time to time (the "Rights Agreement"), between the Company and
ChaseMellon Shareholder Services, L.L.C., as Rights Agent (the "Rights Agent").
The following description of the Rights Agreement is a summary of the material
terms thereof and is qualified in its entirety by reference to the complete text
of the Rights Agreement.

         Upon distribution, the Rights will be attached to all outstanding
shares of Common Stock and will be represented by the certificates representing
such shares. No separate certificates evidencing the Rights (the "Rights
Certificates") will be distributed prior to the Distribution Date (as defined
below). The Rights will separate from the Common Stock and a "Distribution Date"
will occur upon the earlier of (i) 10 business days following a public
announcement that a person or group of affiliated or associated persons (an
"Acquiring Person") has acquired, or obtained the right to acquire, beneficial
ownership of 15% or more of the outstanding shares of Common Stock (the "Stock
Acquisition Date"), or (ii) 10 business days (or such later date as the Board of
Directors shall determine) following the commencement of a tender or exchange
offer that would result in a person or group beneficially owning 15% or more of
such outstanding shares of Common Stock (the "Tender Offer Date"). The term
"Acquiring Person" is defined in the Rights Agreement to exclude Seitel, Inc.,
together with its executive officers and directors, for so long as they are the
beneficial owner of no more than 18% of the outstanding shares of Common Stock.
Until the Distribution Date, (i) the Rights will be evidenced by the Common
Stock certificates and will be transferred with and only with such Common Stock
certificates, (ii) Common Stock certificates will contain a notation
incorporating the Rights Agreement by reference, and (iii) the surrender for
transfer of any certificates for Common Stock outstanding will also constitute
the transfer of the Rights associated with the Common Stock represented by such
certificates. Pursuant to the Rights Agreement, the Company reserves the right
to require prior to the occurrence of a Triggering Event (as defined below)
that, upon any exercise of Rights, a number of Rights be exercised so that only
whole shares of Series A Preferred Stock will be issued (or fractions that are
integral multiples of one one-thousandth of a share).

         The Rights are not exercisable until the Distribution Date and will
expire at the close of business on August 4, 2008, or such later date as the
Board of Directors establishes under certain circumstances, unless earlier
redeemed by the Company as described below.

         As soon as practicable after the Distribution Date, Rights Certificates
will be mailed to holders of record of Common Stock as of the close of business
on the Distribution Date and, thereafter, the separate Rights Certificates alone
will represent the Rights. Except as otherwise determined by the Board of
Directors, only shares of Common Stock outstanding prior to the Distribution
Date will be issued with Rights.

         Each share of Series A Preferred Stock purchased upon exercise of the
Rights will be entitled to a minimum preferential quarterly dividend payment
equal to the greater of (i) $1.00 per share, and (ii) 1,000 times the dividend,
if any, declared per share of Common Stock. In the event of liquidation, the
holders of the Series A Preferred Stock will be entitled to a minimum
preferential liquidation payment equal to 1,000

                                        2

<PAGE>   3



times the par value per share plus an amount equal to accrued and unpaid
dividends and distributions to the date of such payment. Each share of Series A
Preferred Stock will have 1,000 votes and will vote together with the Common
Stock. In the event of any merger, consolidation or other transaction in which
shares of Common Stock are exchanged, each share of Series A Preferred Stock
will be entitled to receive 1,000 times the amount per share of Common Stock
received in such merger, consolidation or other transaction. These rights are
protected by customary antidilution provisions. The shares of Series A Preferred
Stock will, if issued, be junior to any other series of Preferred Stock which
may be authorized and issued by the Company, unless the terms of any such other
series provide otherwise. Because of the nature of the Series A Preferred
Stock's dividend, liquidation and voting rights, the value of one one-thousandth
of a share of Series A Preferred Stock purchasable upon the exercise of each
Right should approximate the value of one share of Common Stock.

         In the event that any Person becomes the beneficial owner of 15% or
more of the then outstanding shares of Common Stock (unless such acquisition is
made pursuant to a tender or exchange offer for all outstanding shares of Common
Stock, upon terms and conditions determined by a majority of the directors to be
in the best interests of the Company and its stockholders (a "Qualifying
Offer")), each holder of a Right (other than an Acquiring Person, certain
related parties and transferees) will thereafter have the right to receive, upon
exercise, Common Stock (or, in certain circumstances, cash, property or other
securities of the Company), having a value equal to two times the exercise price
of the Right. For example, at an exercise price of $46 per Right, each Right not
owned by an Acquiring Person (or by certain related parties or transferees)
following the event set forth above would entitle its holder to purchase $92
worth of Common Stock (or other consideration, as noted above) for $46. Assuming
that the Common Stock had a per share market price of $30 at such time, the
holder of each valid Right would be entitled to purchase 3.06 shares of Common
Stock for $46. The Rights are not exercisable following the occurrence of any of
the events described above until such time as the Rights are no longer
redeemable by the Company as described below. Notwithstanding any of the
foregoing, following the occurrence of any of the events set forth in this
paragraph, all Rights that are, or (under certain circumstances specified in the
Rights Agreement) were, beneficially owned by any Acquiring Person will be null
and void.

         In the event that at any time following the Stock Acquisition Date, (i)
the Company is acquired in a merger or business combination transaction in which
it is not the surviving corporation (other than a merger consummated pursuant to
a Qualifying Offer); (ii) the Company is the surviving corporation in a business
combination transaction (other than such a transaction consummated pursuant to a
Qualifying Offer) but all or part of the outstanding shares of Common Stock are
changed or exchanged for stock or other securities of any person or cash or any
other property; or (iii) more than 50% of the combined assets or earning power
is sold or transferred (in each case other than certain consolidations with,
mergers with and into, or sales of assets or earning power by or to subsidiaries
of the Company as specified in the Rights Agreement), each holder of a Right
(except Rights which have previously been voided as set forth above) shall
thereafter have the right to receive, upon exercise thereof, common stock of the
acquiring company having a value equal to two times the exercise price of the
Right. The events described in this paragraph and in the preceding paragraph are
referred to as the "Triggering Events."

         In order to prevent dilution, the Purchase Price payable, the number
and kind of shares covered by each Right and the number of Rights outstanding
are subject to adjustment from time to time (x) in the event of a stock dividend
on, or a subdivision, combination or reclassification of, the Series A Preferred
Stock, (y) if holders of the Series A Preferred Stock are granted certain rights
or warrants to subscribe for Series A Preferred Stock or securities convertible
into Series A Preferred Stock at less than the current market price of the
Series A Preferred Stock, or (z) upon the distribution to holders of the Series
A Preferred Stock of

                                        3

<PAGE>   4

evidences of indebtedness, cash (excluding regular quarterly cash dividends),
assets (other than dividends payable in Series A Preferred Stock) or
subscription rights or warrants (other than those referred to in clause (y)
above).

         With certain exceptions, no adjustments in the Purchase Price will be
required until cumulative adjustments amount to at least 1% of the Purchase
Price. No fractional shares of Series A Preferred Stock are required to be
issued (other than fractions which are integral multiples of one one-thousandth
of a share of Series A Preferred Stock) and, in lieu thereof, the Company may
make an adjustment in cash based on the market price of the Series A Preferred
Stock on the trading day prior to the date of exercise.

         At any time until ten business days following the Stock Acquisition
Date, the Company may redeem the Rights in whole, but not in part, at a price of
$.001 per Right (payable in cash, shares of Common Stock or other consideration
deemed appropriate by the Board of Directors). The redemption of the Rights may
be made effective at such time on such basis with such conditions as the Board
of Directors in its sole discretion may establish. Immediately upon any
redemption of the Rights, the right to exercise the Rights will terminate and
the only right of the holders of Rights will be to receive the $.001 redemption
price.

         Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive dividends.

         Any of the provisions of the Rights Agreement may be amended by the
Board of Directors of the Company prior to the Distribution Date, other than the
redemption price and the number of one one-thousandths of a share of Series A
Preferred Stock for which a right is exercisable, and the Purchase Price may not
be reduced. After the Distribution Date, the provisions of the Rights Agreement
may be amended by the Board in order to cure any ambiguity, to make changes
which do not adversely affect the interests of holders of Rights or to shorten
or lengthen any time period under the Rights Agreement, except that no amendment
to adjust the time period governing redemption may be made at such time as the
Rights are not redeemable. The Final Expiration Date (as defined in the Rights
Agreement) may be changed and the Purchase Price may be increased at any time
prior to a Stock Acquisition Date or a Tender Offer Date.

         THIS SUMMARY DESCRIPTION OF THE RIGHTS DOES NOT PURPORT TO BE COMPLETE
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE RIGHTS AGREEMENT, FORM OF
CERTIFICATE OF DESIGNATIONS OF JUNIOR PARTICIPATING PREFERRED STOCK, FORM OF
RIGHT CERTIFICATE AND THE FORM OF THE SUMMARY OF RIGHTS, ALL FILED AS EXHIBITS
HERETO AND INCORPORATED BY REFERENCE HEREIN.

         ITEM 7.         FINANCIAL STATEMENTS AND EXHIBITS



         (a)      Financial Statements of businesses acquired.

                                    Not applicable.

         (b)      Pro Forma Financial Information.

                                    Not applicable.



                                        4

<PAGE>   5



         (c)      Exhibits.

                  4.1      Rights Agreement dated as of August 24, 1998 by and
                           between the Company and ChaseMellon Shareholder
                           Services, L.L.C. as Rights Agent, including
                           Certificate of Designations of Junior Participating
                           Preferred Stock as Exhibit A, the form of Rights
                           Certificate as Exhibit B and the Summary of Rights to
                           Purchase Preferred Shares as Exhibit C.

                  4.2      Form of Certificate of Designations of Junior
                           Participating Preferred Stock (Exhibit A to the
                           Rights Agreement filed as Exhibit 4.1 hereto).

                  4.3      Form of Rights Certificate (Exhibit B to the Rights
                           Agreement filed as Exhibit 4.1 hereto).

                  4.4      Form of Summary of Rights to Purchase Preferred
                           Shares (Exhibit C to the Rights Agreement filed as
                           Exhibit 4.1 hereto).

                  99.1     Press Release dated August 24, 1998.


                                        5

<PAGE>   6



                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned, hereunto duly authorized.

                                        EAGLE GEOPHYSICAL, INC.
                                             (Registrant)



Dated: August 24, 1998                  By:  /S/ RICHARD W. MCNAIRY
                                             --------------------------
                                             Richard W. McNairy, Vice President

<PAGE>   7

                                  EXHIBIT INDEX

<TABLE>
<CAPTION>
               Exhibit
               Page No.                 Description
               --------                 -----------
               <S>         <C>
                  4.1   -- Rights Agreement dated as of August 24, 1998 by
                           and between the Company and ChaseMellon Shareholder
                           Services, L.L.C. as Rights Agent, including
                           Certificate of Designation of Junior Participating
                           Preferred Stock as Exhibit A, the form of Rights
                           Certificate as Exhibit B and the Summary of Rights to
                           Purchase Preferred Shares as Exhibit C.

                  4.2   -- Form of Certificate of Designations of Junior
                           Participating Preferred Stock (Exhibit A to the
                           Rights Agreement filed as Exhibit 4.1 hereto).

                  4.3   -- Form of Rights Certificate (Exhibit B to the Rights
                           Agreement filed as Exhibit 4.1 hereto).

                  4.4   -- Form of Summary of Rights to Purchase Preferred
                           Shares (Exhibit C to the Rights Agreement filed as
                           Exhibit 4.1 hereto).

                  99.1  -- Press Release dated August 24, 1998.
</TABLE>


<PAGE>   1

                                                                     EXHIBIT 4.1






- --------------------------------------------------------------------------------


                             EAGLE GEOPHYSICAL, INC.

                                       and

                    CHASEMELLON SHAREHOLDER SERVICES, L.L.C.

                                  Rights Agent

                             -----------------------


                                Rights Agreement

                           Dated as of August 24, 1998


- --------------------------------------------------------------------------------

<PAGE>   2

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
         SECTION                                                                                               PAGE
         -------                                                                                               ----
         <S>               <C>                                                                                 <C>
         Section 1.        Certain Definitions....................................................................1

         Section 2.        Appointment of Rights Agent............................................................4

         Section 3.        Issue of Rights Certificates...........................................................4

         Section 4.        Form of Rights Certificates............................................................5

         Section 5.        Countersignature and Registration......................................................6

         Section 6.        Transfer, Split Up, Combination and Exchange of Rights Certificates;
                           Mutilated, Destroyed, Lost or Stolen Rights Certificates...............................7

         Section 7.        Exercise of Rights, Purchase Price; Expiration Date of Rights..........................8

         Section 8.        Cancellation and Destruction of Rights Certificates....................................9

         Section 9.        Reservation and Availability of Capital Stock.........................................10

         Section 10.       Preferred Stock Record Date...........................................................11

         Section 11.       Adjustment of Purchase Price, Number and Kind of Shares or
                           Number of Rights......................................................................12

         Section 12.       Certificate of Adjusted Purchase Price or Number of Shares............................19

         Section 13.       Consolidation, Merger or Sale or Transfer of Assets or
                           Earning Power.........................................................................20

         Section 14.       Fractional Rights and Fractional Shares...............................................22

         Section 15.       Rights of Action......................................................................23

         Section 16.       Agreement of Rights Holders...........................................................23

         Section 17.       Rights Certificate Holder Not Deemed a Stockholder....................................24

         Section 18.       Concerning the Rights Agent...........................................................24
</TABLE>

                                       -i-

<PAGE>   3

<TABLE>
         <S>               <C>                                                                                 <C>
         Section 19.       Merger or Consolidation or Change of Name of Rights...................................25

         Section 20.       Duties of Rights Agent................................................................26

         Section 21.       Change of Rights Agent................................................................27

         Section 22.       Issuance of New Rights Certificates...................................................28

         Section 23.       Redemption and Termination............................................................29

         Section 24.       Notice of Certain Events..............................................................29

         Section 25.       Notices...............................................................................30

         Section 26.       Supplements and Amendments............................................................31

         Section 27.       Successors............................................................................31

         Section 28.       Determinations and Actions by the Board of Directors, etc.............................32

         Section 29.       Benefits of this Agreement............................................................32

         Section 30.       Severability..........................................................................32

         Section 31.       Governing Law.........................................................................32

         Section 32.       Counterparts..........................................................................33

         Section 33.       Descriptive Headings..................................................................33
</TABLE>

Exhibit A      Certificate of Designations of Rights, Preferences and Privileges

Exhibit B      Form of Rights Certificate

Exhibit C      Summary of Rights

                                      -ii-

<PAGE>   4



                                RIGHTS AGREEMENT

         RIGHTS AGREEMENT, dated as of August 24, 1998 (the "Agreement"),
between Eagle Geophysical, Inc., a Delaware corporation (the "Company"), and
ChaseMellon Shareholder Services, L.L.C., a limited liability company organized
under the laws of the State of New Jersey (the "Rights Agent").

                                   WITNESSETH

         WHEREAS, on August 4, 1998, the Board of Directors of the Company
authorized the distribution of one Right for each share of common stock, $.01
par value per share, of the Company (the "Common Stock") outstanding at the
close of business on August 31,1998 (the "Record Date"), each Right initially
representing the right to purchase one one-thousandth of a share of Series A
Junior Participating Preferred Stock of the Company having the rights, powers
and preferences set forth in the Certificate of Designation, Preferences and
Rights of Series A Junior Participating Preferred Stock filed on August 24,
1998, in the office of the Secretary of State of the State of Delaware, upon the
terms and subject to the conditions hereinafter set forth (the "Rights");

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements herein set forth, the parties hereby agree as follows:

         Section 1.      Certain Definitions. For purposes of this Agreement,
the following terms have the meanings indicated:

                  (a)    "Acquiring Person" shall mean any Person who or which,
together with all Affiliates and Associates of such Person, shall be the
Beneficial Owner of 15% or more of the shares of Common Stock then outstanding,
but shall not include (i) the Company, (ii) any Subsidiary of the Company, (iii)
any employee benefit plan of the Company or of any Subsidiary of the Company, or
any Person or entity organized, appointed or established by the Company for or
pursuant to the terms of any such plan, (iv) any Person who becomes an Acquiring
Person solely as a result of a reduction in the number of shares of Common Stock
outstanding due to the repurchase of shares of Common Stock by the Company,
unless and until such Person shall purchase or otherwise become the Beneficial
Owner of additional shares of Common Stock constituting 1% or more of the then
outstanding shares of Common Stock, or (v) Seitel, Inc., a Delaware corporation,
together with its executive officers and directors, for so long as they are the
Beneficial Owner of no more than 18% of the shares of Common Stock of the
Company then outstanding. Notwithstanding the foregoing, if the Board of
Directors of the Company determines in good faith that a Person who would
otherwise be an Acquiring Person has become such inadvertently, and such Person
divests as promptly as practicable a sufficient number of shares of Common Stock
so that such Person would no longer be an Acquiring Person, then such Person
shall not be deemed to be an Acquiring Person for any purposes of this
Agreement.


                                       -1-

<PAGE>   5



                  (b)    "Affiliate" and "Associate" shall have the respective
meanings ascribed to such terms in Rule 12b-2 of the General Rules and
Regulations under the Securities Exchange Act of 1934, as amended and in effect
on the date of this Agreement (the "Exchange Act").

                  (c)    A Person shall be deemed the "Beneficial Owner" of, and
shall be deemed to "beneficially own," any securities:

                           (i)     which such Person or any of such Person's
         Affiliates or Associates, directly or indirectly, has the right to
         acquire (whether such right is exercisable immediately or only after
         the passage of time) pursuant to any agreement, arrangement or
         understanding (whether or not in writing) or upon the exercise of
         conversion rights, exchange rights, rights, warrants or options, or
         otherwise; provided, however, that a Person shall not be deemed the
         "Beneficial Owner" of, or to "beneficially own," (A) securities
         tendered pursuant to a tender or exchange offer made by such Person or
         any of such Person's Affiliates or Associates until such tendered
         securities are accepted for purchase or exchange, or (B) securities
         issuable upon exercise of Rights at any time prior to the occurrence of
         a Triggering Event, or (C) securities issuable upon exercise of Rights
         from and after the occurrence of a Triggering Event which Rights were
         acquired by such Person or any of such Person's Affiliates or
         Associates prior to the Distribution Date or pursuant to Section 3(a)
         or Section 22, hereof (the "Original Rights") or pursuant to Section
         11(i) hereof in connection with an adjustment made with respect to any
         Original Rights;

                           (ii)    which such Person or any of such Person's
         Affiliates or Associates, directly or indirectly, has the right to vote
         or dispose of or has "beneficial ownership" of (as determined pursuant
         to Rule 13d-3 of the General Rules and Regulations under the Exchange
         Act), including pursuant to any agreement, arrangement or
         understanding, whether or not in writing; provided, however, that a
         Person shall not be deemed the "Beneficial Owner" of, or to
         "beneficially own," any security under this subparagraph (ii) as a
         result of an agreement, arrangement or understanding to vote such
         security if such agreement, arrangement or understanding: (A) arises
         solely from a revocable proxy given in response to a public proxy or
         consent solicitation made pursuant to, and in accordance with, the
         applicable provisions of the General Rules and Regulations under the
         Exchange Act, and (B) is not also then reportable by such Person on
         Schedule 13D under the Exchange Act (or any comparable or successor
         report), or

                           (iii)   which are beneficially owned, directly or
         indirectly, by any other Person (or any Affiliate or Associate thereof)
         with which such Person (or any of such Person's Affiliates or
         Associates) has any agreement, arrangement or understanding (whether or
         not in writing), for the purpose of acquiring, holding, voting (except
         pursuant to a revocable proxy as described in the proviso to
         subparagraph (ii) of this paragraph (c)) or disposing of any voting
         securities of the Company; provided, however, that nothing in this
         paragraph (c) shall cause a

                                       -2-

<PAGE>   6



         Person engaged in the business as an underwriter of securities to be
         deemed the "Beneficial Owner" of, or to "beneficially own," any
         securities acquired through such Person's participation in good faith
         in a firm commitment underwriting until the expiration of forty (40)
         days after the date of such acquisition.

                  (d)    "Business Day" shall mean any day other than a
Saturday, Sunday or a day on which banking institutions in the State of New York
are authorized or obligated by law or executive order to close.

                  (e)    "Close of business" on any given date shall mean 5:00
P.M., New York City time, on such date; provided, however, that if such date is
not a Business Day it shall mean 5:00 P.M., New York City time, on the next
succeeding Business Day.

                  (f)    "Common Stock" shall mean the common stock, par value
$.01 per share, of the Company, except that "Common Stock" when used with
reference to any Person other than the Company shall mean the capital stock of
such Person with the greatest voting power, or the equity securities or other
equity interest having power to control or direct the management, of such
Person.

                  (g)    "Person" shall mean any individual, firm, corporation,
partnership or other entity.

                  (h)    "Preferred Stock" shall mean shares of Series A Junior
Participating Preferred Stock, par value $.01 per share, of the Company and, to
the extent that there are not a sufficient number of shares of Series A Junior
Participating Preferred Stock authorized to permit the full exercise of the
Rights, any other series of preferred stock, par value $.01 per share, of the
Company designated for such purpose containing terms substantially similar to
the terms of the Series A Junior Participating Preferred Stock.

                  (i)    "Section 11(a)(ii) Event" shall mean the event
described in Section 11(a)(ii) hereof.

                  (j)    "Section 13 Event" shall mean any event described in
clauses (x), (y) or (z) of Section 13(a) hereof.

                  (k)    "Stock Acquisition Date" shall mean the first date of
public announcement (which, for purposes of this definition, shall include,
without limitation, a report filed pursuant to Section 13(d) under the Exchange
Act) by the Company or an Acquiring Person that an Acquiring Person has become
such.

                  (l)    "Subsidiary" shall mean, with reference to any Person,
any corporation of which an amount of voting securities sufficient to elect at
least a majority of the directors of such corporation is beneficially owned,
directly or indirectly, by such Person, or otherwise controlled by such Person.


                                       -3-

<PAGE>   7



                  (m)    "Triggering Event" shall mean the Section 11(a)(ii)
Event or any Section 13 Event.

         Section 2.      Appointment of Rights Agent. The Company hereby
appoints the Rights Agent to act as agent for the Company in accordance with the
terms and conditions hereof, and the Rights Agent hereby accepts such
appointment. The Company may from time to time appoint such Co-Rights Agents as
it may deem necessary or desirable.

         Section 3.      Issue of Rights Certificates.

                  (a)    Until the earlier of (i) the close of business on the
tenth Business Day after the Stock Acquisition Date or (ii) the close of
business on the tenth Business Day (or such later date as the Board of Directors
shall determine) after the date that a tender or exchange offer by any Person
(other than the Company, any Subsidiary of the Company, any employee benefit
plan of the Company or of any Subsidiary of the Company, or any Person or entity
organized, appointed or established by the Company for or pursuant to the terms
of any such plan) is first published or sent or given within the meaning of Rule
14d-2(a) of the General Rules and Regulations under the Exchange Act, if upon
consummation thereof, such Person would be the Beneficial Owner of 15% or more
of the shares of Common Stock then outstanding (the earlier of (i) and (ii)
being herein referred to as the "Distribution Date"), (x) the Rights will be
evidenced (subject to the provisions of paragraph (b) of this Section 3) by the
certificates for the Common Stock registered in the names of the holders of the
Common Stock (which certificates for Common Stock shall be deemed also to be
certificates for Rights) and not by separate certificates, and (y) the Rights
will be transferable only in connection with the transfer of the underlying
shares of Common Stock (including a transfer to the Company). As soon as
practicable after the Distribution Date, the Rights Agent will send by
first-class, insured, postage prepaid mail, to each record holder of the Common
Stock as of the close of business on the Distribution Date, at the address of
such holder shown on the records of the Company, one or more right certificates,
in substantially the form of Exhibit B hereto (the "Rights Certificates"),
evidencing one Right for each share of Common Stock so held, subject to
adjustment as provided herein. In the event that an adjustment in the number of
Rights per share of Common Stock has been made pursuant to Section 11(p) hereof,
at the time of distribution of the Rights Certificates, the Company shall make
the necessary and appropriate rounding adjustments (in accordance with Section
14(a) hereof) so that Rights Certificates representing only whole numbers of
Rights are distributed and cash is paid in lieu of any fractional Rights. As of
and after the Distribution Date, the Rights will be evidenced solely by such
Rights Certificates.

                  (b)    On the Record Date, or as soon as practicable
thereafter, the Company will send a copy of a Summary of Rights to Purchase
Preferred Shares, in substantially the form of Exhibit C hereto (the "Summary of
Rights"), by first-class, postage-prepaid mail, to each record holder of shares
of Common Stock as of the Close of Business on the Record Date, at the address
of such holder shown on the records of the Company. With respect to certificates
for shares of Common Stock outstanding as of the Record Date, until the
Distribution Date, the Rights will be evidenced by such certificates registered
in the names of the holders thereof together with a copy of the Summary of
Rights. Until the Distribution Date (or the earlier of the Redemption Date or

                                       -4-

<PAGE>   8



the Final Expiration Date), the surrender for transfer of any certificate for
shares of Common Stock outstanding on the Record Date, with or without a copy of
the Summary of Rights, shall also constitute the transfer of the Rights
associated with the shares of Common Stock represented thereby.

                  (c)    Rights shall be issued in respect of all shares of
Common Stock which are issued after the date of this Agreement but prior to the
earlier of the Distribution Date or the Expiration Date. Certificates
representing such shares of Common Stock shall also be deemed to be certificates
for Rights, and shall bear the following legend:

                         This certificate also evidences and entities the holder
                  hereof to certain Rights as set forth in the Rights Agreement
                  between Eagle Geophysical, Inc. and ChaseMellon Shareholder
                  Services, L.L.C., dated as of August 24, 1998 (the "Rights
                  Agreement"), the terms of which are hereby incorporated herein
                  by reference and a copy of which is on file at the principal
                  offices of Eagle Geophysical, Inc. Under certain
                  circumstances, as set forth in the Rights Agreement, such
                  Rights will be evidenced by separate certificates and will no
                  longer be evidenced by this certificate. Eagle Geophysical,
                  Inc. will mail to the holder of this certificate a copy of the
                  Rights Agreement, as in effect on the date of mailing, without
                  charge promptly after receipt of a written request therefor.
                  Under certain circumstances set forth in the Rights Agreement,
                  Rights issued to, or held by, any Person who is, was or
                  becomes an Acquiring Person or any Affiliate or Associate
                  thereof (as such terms are defined in the Rights Agreement),
                  whether currently held by or on behalf of such Person or by
                  any subsequent holder, may become null and void.

With respect to such certificates containing the foregoing legend, until the
earlier of (i) the Distribution Date or (ii) the Expiration Date, the Rights
associated with the Common Stock represented by such certificates shall be
evidenced by such certificates alone and registered holders of Common Stock
shall also be the registered holders of the associated Rights, and the transfer
of any of such certificates shall also constitute the transfer of the Rights
associated with the Common Stock represented by such certificates.

         Section 4.      Form of Rights Certificates.

                  (a)    The Rights Certificates (and the forms of election to
purchase and of assignment to be printed on the reverse thereof) shall each be
substantially in the form set forth in Exhibit B hereto and may have such marks
of identification or designation and such legends, summaries or endorsements
printed thereon as the Company may deem appropriate and as are not inconsistent
with the provisions of this Agreement, or as may be required to comply with any
applicable law or with any rule or regulation made pursuant thereto or with any
rule or regulation of any stock exchange on which the Rights may from time to
time be listed, or to conform to

                                       -5-

<PAGE>   9



usage. Subject to the provisions of Section 11 and Section 22 hereof, the Rights
Certificates, whenever distributed, shall be dated as of the Record Date and on
their face shall entitle the holders thereof to purchase such number of one
one-thousandths of a share of Preferred Stock as shall be set forth therein at
the price set forth therein (such exercise price per one one-thousandth of a
share, the "Purchase Price"), but the amount and type of securities purchasable
upon the exercise of each Right and the Purchase Price thereof shall be subject
to adjustment as provided herein.

                  (b)    Any Rights Certificate issued pursuant to Section 3(a)
or Section 22 hereof that represents Rights beneficially owned by: (i) an
Acquiring Person or any Associate or Affiliate of an Acquiring Person, (ii) a
transferee of an Acquiring Person (or of any such Associate or Affiliate) who
becomes a transferee after the Acquiring Person becomes such, or (iii) a
transferee of an Acquiring Person (or of any such Associate or Affiliate) who
becomes a transferee prior to or concurrently with the Acquiring Person becoming
such and receives such Rights pursuant to either (A) a transfer (whether or not
for consideration) from the Acquiring Person to holders of equity interests in
such Acquiring Person or to any Person with whom such Acquiring Person has any
continuing agreement, arrangement or understanding regarding the transferred
Rights or (B) a transfer which the Board of Directors of the Company has
determined is part of a plan, arrangement or understanding which has as a
primary purpose or effect avoidance of Section 7(e) hereof, and any Rights
Certificate issued pursuant to Section 6 or Section 11 hereof upon transfer,
exchange, replacement or adjustment of any other Rights Certificate referred to
in this sentence, shall contain (to the extent feasible) the following legend:

                  The Rights represented by this Rights Certificate are or were
                  beneficially owned by a Person who was or became an Acquiring
                  Person or an Affiliate or Associate of an Acquiring Person (as
                  such terms are defined in the Rights Agreement). Accordingly,
                  this Rights Certificate and the Rights represented hereby may
                  become null and void in the circumstances specified in Section
                  7(e) of such Agreement.

         Section 5.      Countersignature and Registration.

                  (a)    The Rights Certificates shall be executed on behalf of 
the Company by its Chairman of the Board, its President or any Vice President,
either manually or by facsimile signature, and shall have affixed thereto the
Company's seal or a facsimile thereof which shall be attested by the Secretary
or an Assistant Secretary of the Company, either manually or by facsimile
signature. The Rights Certificates shall be countersigned by the Rights Agent,
either manually or by facsimile signature, and shall not be valid for any
purpose unless so countersigned. In case any officer of the Company who shall
have signed any of the Rights Certificates shall cease to be such officer of the
Company before countersignature by the Rights Agent and issuance and delivery by
the Company, such Rights Certificates, nevertheless, may be countersigned by the
Rights Agent and issued and delivered by the Company with the same force and
effect as though the person who signed such Rights Certificates had not ceased
to be such officer of the Company and any Rights Certificates may be signed on
behalf of the Company by

                                       -6-

<PAGE>   10



any person who, at the actual date of the execution of such Rights Certificate,
shall be a proper officer of the Company to sign such Rights Certificate,
although at the date of the execution of this Rights Agreement any such person
was not such an officer.

                  (b)    Following the Distribution Date, the Rights Agent will
keep or cause to be kept, at its principal office or offices designated as the
appropriate place for surrender of Rights Certificates upon exercise or
transfer, books for registration and transfer of the Rights Certificates issued
hereunder. Such books shall show the names and addresses of the respective
holders of the Rights Certificates, the number of Rights evidenced on its face
by each of the Rights Certificates and the date of each of the Rights
Certificates.

         Section 6.      Transfer, Split Up, Combination and Exchange of Rights
Certificates; Mutilated, Destroyed, Lost or Stolen Rights Certificates. (a)
Subject to the provisions of Section 4(b), Section 7(e) and Section 14 hereof,
at any time after the close of business on the Distribution Date, and at or
prior to the close of business on the Expiration Date, any Rights Certificate or
Certificates may be transferred, split up, combined or exchanged for another
Rights Certificate or Certificates, entitling the registered holder to purchase
a like number of one one-thousandths of a share of Preferred Stock (or,
following a Triggering Event, Common Stock, other securities, cash or other
assets, as the case may be) as the Rights Certificate or Certificates
surrendered then entitled such holder (or former holder in the case of a
transfer) to purchase. Any registered holder desiring to transfer, split up,
combine or exchange any Rights Certificate or Certificates shall make such
request in writing delivered to the Rights Agent, and shall surrender the Rights
Certificate or Certificates to be transferred, split up, combined or exchanged
at the principal office or offices of the Rights Agent designated for such
purpose. Neither the Rights Agent nor the Company shall be obligated to take any
action whatsoever with respect to the transfer of any such surrendered Rights
Certificate until the registered holder shall have completed and signed the
certificate contained in the form of assignment on the reverse side of such
Rights Certificate and shall have provided such additional evidence of the
identity of the Beneficial Owner (or former Beneficial Owner) or Affiliates or
Associates thereof as the Company shall reasonably request. Thereupon the Rights
Agent shall, subject to Section 4(b), Section 7(e) and Section 14 hereof,
countersign and deliver to the Person entitled thereto a Rights Certificate or
Rights Certificates, as the case may be, as so requested. The Company may
require payment of a sum sufficient to cover any tax or governmental charge that
may be imposed in connection with any transfer, split up, combination or
exchange of Rights Certificates.

                  (b)    Upon receipt by the Company and the Rights Agent of
evidence reasonably satisfactory to them of the loss, theft, destruction or
mutilation of a Rights Certificate, and, in case of loss, theft or destruction,
of indemnity or security reasonably satisfactory to them, and reimbursement to
the Company and the Rights Agent of all reasonable expenses incidental thereto,
and upon surrender to the Rights Agent and cancellation of the Rights
Certificate if mutilated, the Company will execute and deliver a new Rights
Certificate of like tenor to the Rights Agent for countersignature and delivery
to the registered owner in lieu of the Rights Certificate so lost, stolen,
destroyed or mutilated.


                                       -7-

<PAGE>   11



         Section 7.      Exercise of Rights, Purchase Price; Expiration Date of
Rights. (a) Subject to Section 7(e) hereof, the registered holder of any Rights
Certificate may exercise the Rights evidenced thereby (except as otherwise
provided herein including, without limitation, the restrictions on
exercisability set forth in Section 9(c), Section 11(a)(iii) and Section 23(a)
hereof) in whole or in part at any time after the Distribution Date upon
surrender of the Rights Certificate, with the form of election to purchase and
the certificate on the reverse side thereof duly executed, to the Rights Agent
at the principal office or offices of the Rights Agent designated for such
purpose, together with payment of the aggregate Purchase Price with respect to
the total number of one one-thousandths of a share of Preferred Stock (or other
securities, cash or other assets, as the case may be) as to which such
surrendered Rights are then exercisable, at or prior to the earlier of (i) the
close of business on August 4, 2008 (the "Final Expiration Date"), or (ii) the
time at which the Rights are redeemed as provided in Section 23 hereof (the
earlier of (i) and (ii) being herein referred to as the "Expiration Date").

                  (b)    The Purchase Price for each one one-thousandth of a
share of Preferred Stock pursuant to the exercise of a Right shall initially be
$46, and shall be subject to adjustment from time to time as provided in
Sections 11 and 13(a) hereof and shall be payable in accordance with paragraph
(c) below.

                  (c)    Upon receipt of a Rights Certificate representing
exercisable Rights, with the form of election to purchase and the certificate
duly executed, accompanied by payment, with respect to each Right so exercised,
of the Purchase Price per one one-thousandth of a share of Preferred Stock (or
other securities, cash or other assets, as the case may be) to be purchased as
set forth below and an amount equal to any applicable transfer tax, the Rights
Agent shall, subject to Section 20(k) hereof, thereupon promptly (i) (A)
requisition from any transfer agent of the shares of Preferred Stock (or make
available, if the Rights Agent is the transfer agent for such shares)
certificates for the total number of one one-thousandths of a share of Preferred
Stock to be purchased and the Company hereby irrevocably authorizes its transfer
agent to comply with all such requests, or (B) if the Company shall have elected
to deposit the total number of shares of Preferred Stock issuable upon exercise
of the Rights hereunder with a depositary agent, requisition from the depositary
agent depositary receipts representing such number of one one-thousandths of a
share of Preferred Stock as are to be purchased (in which case certificates for
the shares of Preferred Stock represented by such receipts shall be deposited by
the transfer agent with the depositary agent) and the Company will direct the
depositary agent to comply with such request, (ii) requisition from the Company
the amount of cash, if any, to be paid in lieu of fractional shares in
accordance with Section 14 hereof, (iii) after receipt of such certificates or
depositary receipts, cause the same to be delivered to, or upon the order of,
the registered holder of such Rights Certificate, registered in such name or
names as may be designated by such holder, and (iv) after receipt thereof,
deliver such cash, if any, to, or upon the order of, the registered holder of
such Rights Certificate. The payment of the Purchase Price (as such amount may
be reduced pursuant to Section 11(a)(iii) hereof) may be made (x) in cash or by
certified bank check or bank draft payable to the order of the Company, or (y)
by delivery of a certificate or certificates (with appropriate stock powers
executed in blank attached thereto) evidencing a number of shares of Common
Stock equal to the then Purchase Price divided by the closing price (as
determined pursuant to Section 11(d) hereof) per share of Common Stock on the
Trading Day (as defined

                                       -8-

<PAGE>   12



hereinafter) immediately preceding the date of such exercise. In the event that
the Company is obligated to issue other securities (including Common Stock) of
the Company, pay cash and/or distribute other property pursuant to Section 11
(a) hereof, the Company will make all arrangements necessary so that such other
securities, cash and/or other property are available for distribution by the
Rights Agent, if and when appropriate. The Company reserves the right to require
prior to the occurrence of a Triggering Event that, upon any exercise of Rights,
a number of Rights be exercised so that only whole shares of Preferred Stock
would be issued.

                  (d)    In case the registered holder of any Rights Certificate
shall exercise less than all the Rights evidenced thereby, a new Rights
Certificate evidencing Rights equivalent to the Rights remaining unexercised
shall be issued by the Rights Agent and delivered to, or upon the order of, the
registered holder of such Rights Certificate, registered in such name or names
as may be designated by such holder, subject to the provisions of Section 14
hereof.

                  (e)    Notwithstanding anything in this Agreement to the
contrary, from and after the occurrence of the Section 11(a)(ii) Event, any
Rights beneficially owned by (i) an Acquiring Person or an Associate or
Affiliate of an Acquiring Person, (ii) a transferee of an Acquiring Person (or
of any such Associate or Affiliate) who becomes a transferee after the Acquiring
Person becomes such, or (iii) a transferee of an Acquiring Person (or of any
such Associate or Affiliate) who becomes a transferee prior to or concurrently
with the Acquiring Person becoming such and receives such Rights pursuant to
either (A) a transfer (whether or not for consideration) from the Acquiring
Person to holders of equity interests in such Acquiring Person or to any Person
with whom the Acquiring Person has any continuing agreement, arrangement or
understanding regarding the transferred Rights or (B) a transfer which the Board
of Directors of the Company has determined is part of a plan, arrangement or
understanding which has as a primary purpose or effect the avoidance of this
Section 7(e), shall become null and void without any further action, and no
holder of such Rights shall have any rights whatsoever with respect to such
Rights, whether under any provision of this Agreement or otherwise. The Company
shall use all reasonable efforts to insure that the provisions of this Section
7(e) and Section 4(b) hereof are complied with, but shall have no liability to
any holder of Rights Certificates or other Person as a result of its failure to
make any determinations with respect to an Acquiring Person or its Affiliates,
Associates or transferees hereunder.

                  (f)    Notwithstanding anything in this Agreement to the
contrary, neither the Rights Agent nor the Company shall be obligated to
undertake any action with respect to a registered holder upon the occurrence of
any purported exercise as set forth in this Section 7 unless such registered
holder shall have (i) completed and signed the certificate contained in the form
of election to purchase set forth on the reverse side of the Rights Certificate
surrendered for such exercise, and (ii) provided such additional evidence of the
identity of the Beneficial Owner (or former Beneficial Owner) or Affiliates or
Associates thereof as the Company shall reasonably request.

         Section 8.      Cancellation and Destruction of Rights Certificates.
All Rights Certificates surrendered for the purpose of exercise, transfer, split
up, combination or exchange shall, if surrendered to the Company or any of its
agents, be delivered to the Rights Agent for cancellation

                                       -9-

<PAGE>   13



or in cancelled form, or, if surrendered to the Rights Agent, shall be cancelled
by it, and no Rights Certificates shall be issued in lieu thereof except as
expressly permitted by any of the provisions of this Agreement. The Company
shall deliver to the Rights Agent for cancellation and retirement, and the
Rights Agent shall so cancel and retire, any other Rights Certificate purchased
or acquired by the Company otherwise than upon the exercise thereof. The Rights
Agent shall deliver all cancelled Rights Certificates to the Company, or shall,
at the written request of the Company, destroy such cancelled Rights
Certificates, and in such case shall deliver a certificate of destruction
thereof to the Company.

         Section 9.      Reservation and Availability of Capital Stock. (a) The
Company covenants and agrees that it will cause to be reserved and kept
available out of its authorized and unissued shares of Preferred Stock (and,
following the occurrence of a Triggering Event, out of its authorized and
unissued shares of Common Stock and/or other securities or out of its authorized
and issued shares held in its treasury), the number of shares of Preferred Stock
(and, following the occurrence of a Triggering Event, Common Stock and/or other
securities) that, as provided in this Agreement including Section 11(a)(iii)
hereof, will be sufficient to permit the exercise in full of all outstanding
Rights.

                  (b)    So long as the shares of Preferred Stock (and,
following the occurrence of a Triggering Event, Common Stock and/or other
securities) issuable and deliverable upon the exercise of the Rights may be
listed on any national securities exchange, the Company shall use its best
efforts to cause, from and after such time as the Rights become exercisable, all
shares reserved for such issuance to be listed on such exchange upon official
notice of issuance upon such exercise.

                  (c)    The Company shall use its best efforts (i) to file, as
soon as practicable following the earliest date after the occurrence of the
Section 11(a)(ii) Event on which the consideration to be delivered by the
Company upon exercise of the Rights has been determined in accordance with
Section 11(a)(iii) hereof, or as soon as is required by law following the
Distribution Date, as the case may be, a registration statement under the
Securities Act of 1933, as amended (the "Act"), with respect to the securities
purchasable upon exercise of the Rights on an appropriate form, (ii) to cause
such registration statement to become effective as soon as practicable after
such filing, and (iii) to cause such registration statement to remain effective
(with a prospectus at all times meeting the requirements of the Act) until the
earlier of (A) the date as of which the Rights are no longer exercisable for
such securities, and (B) the date of the expiration of the Rights. The Company
will also take such action as may be appropriate under, or to ensure compliance
with, the securities or "blue sky" laws of the various states in connection with
the exercisability of the Rights. The Company may temporarily suspend, for a
period of time not to exceed ninety (90) days after the date set forth in clause
(i) of the first sentence of this Section 9(c), the exercisability of the Rights
in order to prepare and file such registration statement and permit it to become
effective. Upon any such suspension, the Company shall issue a public
announcement stating that the exercisability of the Rights has been temporarily
suspended, as well as a public announcement at such time as the suspension is no
longer in effect. Notwithstanding any provision of this Agreement to the
contrary, the Rights shall not be exercisable in any jurisdiction if the
requisite qualification in such jurisdiction shall not have been obtained, the

                                      -10-

<PAGE>   14



exercise thereof shall not be permitted under applicable law or a registration
statement shall not have been declared effective.

                  (d)    The Company covenants and agrees that it will take all
such action as may be necessary to ensure that all one one-thousandths of a
share of Preferred Stock (and, following the occurrence of a Triggering Event,
Common Stock and/or other securities) delivered upon exercise of Rights shall,
at the time of delivery of the certificates for such shares (subject to payment
of the Purchase Price), be duly and validly authorized and issued and fully paid
and nonassessable.

                  (e)    The Company further covenants and agrees that it will
pay when due and payable any and all federal and state transfer taxes and
charges which may be payable in respect of the issuance or delivery of the
Rights Certificates and of any certificates for a number of one one-thousandths
of a share of Preferred Stock (or Common Stock and/or other securities, as the
case may be) upon the exercise of Rights. The Company shall not, however, be
required to pay any transfer tax which may be payable in respect of any transfer
or delivery of Rights Certificates to a Person other than, or the issuance or
delivery of a number of one one-thousandths of a share of Preferred Stock (or
Common Stock and/or other securities, as the case may be) in respect of a name
other than that of, the registered holder of the Rights Certificates evidencing
Rights surrendered for exercise or to issue or deliver any certificates for a
number of one one-thousandths of a share of Preferred Stock (or Common Stock
and/or other securities, as the case may be) in a name other than that of the
registered holder upon the exercise of any Rights until such tax shall have been
paid (any such tax being payable by the holder of such Rights Certificate at the
time of surrender) or until it has been established to the Company's
satisfaction that no such tax is due.

         Section 10.     Preferred Stock Record Date. Each person in whose name
any certificate for a number of one one-thousandths of a share of Preferred
Stock (or Common Stock and/or other securities, as the case may be) is issued
upon the exercise of Rights shall for all purposes be deemed to have become the
holder of record of such fractional shares of Preferred Stock (or Common Stock
and/or other securities, as the case may be) represented thereby on, and such
certificate shall be dated, the date upon which the Rights Certificate
evidencing such Rights was duly surrendered and payment of the Purchase Price
(and all applicable transfer taxes) was made; provided, however, that if the
date of such surrender and payment is a date upon which the Preferred Stock (or
Common Stock and/or other securities, as the case may be) transfer books of the
Company are closed, such Person shall be deemed to have become the record holder
of such shares (fractional or otherwise) on, and such certificate shall be
dated, the next succeeding Business Day on which the Preferred Stock (or Common
Stock and/or other securities, as the case may be) transfer books of the Company
are open. Prior to the exercise of the Rights evidenced thereby, the holder of a
Rights Certificate shall not be entitled to any rights of a stockholder of the
Company with respect to shares for which the Rights shall be exercisable,
including, without limitation, the right to vote, to receive dividends or other
distributions or to exercise any preemptive rights, and shall not be entitled to
receive any notice of any proceedings of the Company, except as provided herein.


                                      -11-

<PAGE>   15



         Section 11.     Adjustment of Purchase Price, Number and Kind of Shares
or Number of Rights. The Purchase Price, the number and kind of shares covered
by each Right and the number of Rights outstanding are subject to adjustment
from time to time as provided in this Section 11.

                                    (a)(i)   In the event the Company shall at
         any time after the date of this Agreement (A) declare a dividend on the
         Preferred Stock payable in shares of Preferred Stock, (B) subdivide the
         outstanding Preferred Stock, (C) combine the outstanding Preferred
         Stock into a smaller number of shares, or (D) issue any shares of its
         capital stock in a reclassification of the Preferred Stock (including
         any such reclassification in connection with a consolidation or merger
         in which the Company is the continuing or surviving corporation),
         except as otherwise provided in this Section 11(a) and Section 7(e)
         hereof, the Purchase Price in effect at the time of the record date for
         such dividend or of the effective date of such subdivision, combination
         or reclassification, and the number and kind of shares of Preferred
         Stock or capital stock, as the case may be, issuable on such date,
         shall be proportionately adjusted so that the holder of any Right
         exercised after such time shall be entitled to receive, upon payment of
         the Purchase Price then in effect, the aggregate number and kind of
         shares of Preferred Stock or capital stock, as the case may be, which,
         if such Right had been exercised immediately prior to such date and at
         a time when the Preferred Stock transfer books of the Company were
         open, he would have owned upon such exercise and been entitled to
         receive by virtue of such dividend, subdivision, combination or
         reclassification. If an event occurs which would require an adjustment
         under both this Section 11(a)(i) and Section 11(a)(ii) hereof, the
         adjustment provided for in this Section 11(a)(i) shall be in addition
         to, and shall be made prior to, any adjustment required pursuant to
         Section 11(a)(ii) hereof.

                                    (ii)     In the event any Person becomes an
         Acquiring Person, unless the event causing the 15% threshold to be
         crossed is a transaction set forth in Section 13(a) hereof, or is an
         acquisition of shares of Common Stock pursuant to a tender offer or an
         exchange offer for all outstanding shares of Common Stock at a price
         and on terms determined by at least a majority of the directors to be
         in the best interests of the Company and its stockholders (a
         "Qualifying Offer"),

then, promptly following the occurrence of such event, proper provision shall be
made so that each holder of a Right (except as provided below and in Section
7(e) hereof) shall thereafter have the right to receive, upon exercise thereof
at the then current Purchase Price in accordance with the terms of this
Agreement, in lieu of a number of one one-thousandths of a share of Preferred
Stock, such number of shares of Common Stock of the Company as shall equal the
result obtained by (x) multiplying the then current Purchase Price by the then
number of one one-thousandths of a share of Preferred Stock for which a Right
was exercisable immediately prior to the occurrence of the Section 11(a)(ii)
Event, and (y) dividing that product (which, following such occurrence, shall
thereafter be referred to as the "Purchase Price" for each Right and for all
purposes of this Agreement) by 50% of the current market price (determined
pursuant to Section 11(d) hereof) per

                                      -12-

<PAGE>   16



share of Common Stock on the date of such occurrence (such number of shares, the
"Adjustment Shares").

                                    (iii)    In the event that the number of
         shares of Common Stock which are authorized by the Certificate of
         Incorporation but not outstanding or reserved for issuance for purposes
         other than upon exercise of the Rights are not sufficient to permit the
         exercise in full of the Rights in accordance with the foregoing
         subparagraph (ii) of this Section 11(a), the Company shall: (A)
         determine the excess of (1) the value of the Adjustment Shares issuable
         upon the exercise of a Right (the "Current Value") over (2) the
         Purchase Price (such excess, the "Spread"), and (B) with respect to
         each Right (subject to Section 7(e) hereof), make adequate provision to
         substitute for the Adjustment Shares, upon exercise of the Right and
         payment of the applicable Purchase Price, (1) cash, (2) a reduction in
         the Purchase Price, (3) Common Stock or other equity securities of the
         Company (including, without limitation, shares, or units of shares, of
         preferred stock which the Board of Directors of the Company has deemed
         to have the same value as shares of Common Stock (such shares of
         preferred stock, "common stock equivalents")), (4) debt securities of
         the Company, (5) other assets, or (6) any combination of the foregoing,
         having an aggregate value equal to the Current Value, where such
         aggregate value has been determined by the Board of Directors of the
         Company based upon the advice of a nationally recognized investment
         banking firm selected by the Board of Directors of the Company;
         provided, however, if the Company shall not have made adequate
         provision to deliver value pursuant to clause (B) above within thirty
         (30) days following the later of (x) the occurrence of the Section
         11(a)(ii) Event and (y) the date on which the Company's right of
         redemption pursuant to Section 23(a) expires (the later of (x) and (y)
         being referred to herein as the "Section 11(a)(ii) Trigger Date"), then
         the Company shall be obligated to deliver, upon the surrender for
         exercise of a Right and without requiring payment of the Purchase
         Price, shares of Common Stock (to the extent available) and then, if
         necessary, cash, which shares and/or cash have an aggregate value equal
         to the Spread. If the Board of Directors of the Company shall determine
         in good faith that it is likely that sufficient additional shares of
         Common Stock could be authorized for issuance upon exercise in full of
         the Rights, the thirty (30) day period set forth above may be extended
         to the extent necessary, but not more than ninety (90) days after the
         Section 11(a)(ii) Trigger Date, in order that the Company may seek
         stockholder approval for the authorization of such additional shares
         (such period, as it may be extended, the "Substitution Period"). To the
         extent that the Company determines that some action need be taken
         pursuant to the first and/or second sentences of this Section
         11(a)(iii), the Company (x) shall provide, subject to Section 7(e)
         hereof, that such action shall apply uniformly to all outstanding
         Rights, and (y) may suspend the exercisability of the Rights until the
         expiration of the Substitution Period in order to seek any
         authorization of additional shares and/or to decide the appropriate
         form of distribution to be made pursuant to such first sentence and to
         determine the value thereof. In the event of any such suspension, the
         Company shall issue a public

                                      -13-

<PAGE>   17



         announcement stating that the exercisability of the Rights has been
         temporarily suspended, as well as a public announcement at such time as
         the suspension is no longer in effect. For purposes of this Section
         11(a)(iii), the value of each Adjustment Share shall be the current
         market price (as determined pursuant to Section 11(d) hereof) per share
         of the Common Stock on the Section 11(a)(ii) Trigger Date and the per
         share or per unit value of any "common stock equivalent" shall be
         deemed to be equal to the current market price (as determined pursuant
         to Section 11(d) hereof) of the Common Stock on such date.

                  (b)    In case the Company shall fix a record date for the
issuance of rights, options or warrants to all holders of Preferred Stock
entitling them to subscribe for or purchase (for a period expiring within
forty-five (45) calendar days after such record date) Preferred Stock (or shares
having the same rights, privileges and preferences as the shares of Preferred
Stock ("equivalent preferred stock")) or securities convertible into Preferred
Stock or equivalent preferred stock at a price per share of Preferred Stock or
per share of equivalent preferred stock (or having a conversion price per share,
if a security convertible into Preferred Stock or equivalent preferred stock)
less than the current market price (as determined pursuant to Section 11(d)
hereof) per share of Preferred Stock on such record date, the Purchase Price to
be in effect after such record date shall be determined by multiplying the
Purchase Price in effect immediately prior to such record date by a fraction,
the numerator of which shall be the number of shares of Preferred Stock
outstanding on such record date, plus the number of shares of Preferred Stock
which the aggregate offering price of the total number of shares of Preferred
Stock and/or equivalent preferred stock so to be offered (and/or the aggregate
initial conversion price of the convertible securities so to be offered) would
purchase at such current market price, and the denominator of which shall be the
number of shares of Preferred Stock outstanding on such record date, plus the
number of additional shares of Preferred Stock and/or equivalent preferred stock
to be offered for subscription or purchase (or into which the convertible
securities so to be offered are initially convertible). In case such
subscription price may be paid by delivery of consideration part or all of which
may be in a form other than cash, the value of such consideration shall be as
determined in good faith by the Board of Directors of the Company, whose
determination shall be described in a statement filed with the Rights Agent and
shall be binding on the Rights Agent and the holders of the Rights, shares of
Preferred Stock owned by or held for the account of the Company shall not be
deemed outstanding for the purpose of any such computation. Such adjustment
shall be made successively whenever such a record date is fixed, and in the
event that such rights or warrants are not so issued, the Purchase Price shall
be adjusted to be the Purchase Price which would then be in effect if such
record date had not been fixed.

                  (c)    In case the Company shall fix a record date for a
distribution to all holders of Preferred Stock (including any such distribution
made in connection with a consolidation or merger in which the Company is the
continuing corporation) of evidences of indebtedness, cash (other than a regular
quarterly cash dividend out of the earnings or retained earnings of the
Company), assets (other than a dividend payable in Preferred Stock, but
including any dividend payable in stock other than Preferred Stock) or
subscription rights or warrants (excluding those referred to in Section 11(b)
hereof), the Purchase Price to be in effect after such record date shall be
determined by multiplying the Purchase Price in effect immediately prior to such
record date

                                      -14-

<PAGE>   18



by a fraction, the numerator of which shall be the current market price (as
determined pursuant to Section 11(d) hereof) per share of Preferred Stock on
such record date, less the fair market value (as determined in good faith by the
Board of Directors of the Company, whose determination shall be described in a
statement filed with the Rights Agent) of the portion of the cash, assets or
evidences of indebtedness so to be distributed or of such subscription rights or
warrants applicable to a share of Preferred Stock and the denominator of which
shall be such current market price (as determined pursuant to Section 11(d)
hereof) per share of Preferred Stock. Such adjustments shall be made
successively whenever such a record date is fixed, and in the event that such
distribution is not so made, the Purchase Price shall be adjusted to be the
Purchase Price which would have been in effect if such record date had not been
fixed.

                           (d)(i)  For the purpose of any computation hereunder,
         other than computations made pursuant to Section 11(a)(iii) hereof, the
         "current market price" per share of Common Stock on any date shall be
         deemed to be the average of the daily closing prices per share of such
         Common Stock for the thirty (30) consecutive Trading Days (as such term
         is hereinafter defined) immediately prior to such date, and for
         purposes of computations made pursuant to Section 11(a)(iii) hereof,
         the "current market price" per share of Common Stock on any date shall
         be deemed to be the average of the daily closing prices per share of
         such Common Stock for the ten (10) consecutive Trading Days immediately
         following such date; provided, however, that in the event that the
         current market price per share of the Common Stock is determined during
         a period following the announcement by the issuer of such Common Stock
         of (A) a dividend or distribution on such Common Stock payable in
         shares of such Common Stock or securities convertible into shares of
         such Common Stock (other than the Rights), or (B) any subdivision,
         combination or reclassification of such Common Stock, and the
         ex-dividend date for such dividend or distribution, or the record date
         for such subdivision, combination or reclassification shall not have
         occurred prior to the commencement of the requisite thirty (30) Trading
         Day or ten (10) Trading Day period, as set forth above, then, and in
         each such case, the "current market price" shall be properly adjusted
         to take into account ex-dividend trading. The closing price for each
         day shall be the last sale price, regular way, or, in case no such sale
         takes place on such day, the average of the closing bid and asked
         prices, regular way, in either case as reported in the principal
         consolidated transaction reporting system with respect to securities
         listed or admitted to trading on The Nasdaq Stock Market's National
         Market or, if the shares of Common Stock are not listed or admitted to
         trading on The Nasdaq Stock Market's National Market, as reported in
         the principal consolidated transaction reporting system with respect to
         securities listed on the principal national securities exchange on
         which the shares of Common Stock are listed or admitted to trading or,
         if the shares of Common Stock are not listed or admitted to trading on
         any national securities exchange, the last quoted price or, if not so
         quoted, the average of the high bid and low asked prices in the
         over-the-counter market, as reported by the National Association of
         Securities Dealers, Inc. Automated Quotation System ("NASDAQ") or such
         other system then in use, or, if on any such date the shares of Common
         Stock are not quoted by any such

                                      -15-

<PAGE>   19



         organization, the average of the closing bid and asked prices as
         furnished by a professional market maker making a market in the Common
         Stock selected by the Board of Directors of the Company. If on any such
         date no market maker is making a market in the Common Stock, the fair
         value of such shares on such date as determined in good faith by the
         Board of Directors of the Company shall be used. The term "Trading Day"
         shall mean a day on which the principal national securities exchange on
         which the shares of Common Stock are listed or admitted to trading is
         open for the transaction of business or, if the shares of Common Stock
         are not listed or admitted to trading on any national securities
         exchange, a Business Day. If the Common Stock is not publicly held or
         not so listed or traded, "current market price" per share shall mean
         the fair value per share as determined in good faith by the Board of
         Directors of the Company, whose determination shall be described in a
         statement filed with the Rights Agent and shall be conclusive for all
         purposes.

                                    (ii)     For the purpose of any computation
         hereunder, the "current market price" per share of Preferred Stock
         shall be determined in the same manner as set forth above for the
         Common Stock in clause (i) of this Section 11(d) (other than the last
         sentence thereof). If the current market price per share of Preferred
         Stock cannot be determined in the manner provided above or if the
         Preferred Stock is not publicly held or listed or traded in a manner
         described in clause (i) of this Section 11(d), the "current market
         price" per share of Preferred Stock shall be conclusively deemed to be
         an amount equal to 1,000 (as such number may be appropriately adjusted
         for such events as stock splits, stock dividends and recapitalizations
         with respect to the Common Stock occurring after the date of this
         Agreement) multiplied by the current market price per share of the
         Common Stock. If neither the Common Stock nor the Preferred Stock is
         publicly held or so listed or traded, "current market price" per share
         of the Preferred Stock shall mean the fair value per share as
         determined in good faith by the Board of Directors of the Company,
         whose determination shall be described in a statement filed with the
         Rights Agent and shall be conclusive for all purposes. For all purposes
         of this Agreement, the "current market price" of one one-thousandth of
         a share of Preferred Stock shall be equal to the "current market price"
         of one share of Preferred Stock divided by 1,000.

                  (e)    Anything herein to the contrary notwithstanding, no
adjustment in the Purchase Price shall be required unless such adjustment would
require an increase or decrease of at least one percent (1%) in the Purchase
Price; provided, however, that any adjustments which by reason of this Section
11(e) are not required to be made shall be carried forward and taken into
account in any subsequent adjustment. All calculations under this Section 11
shall be made to the nearest cent or to the nearest ten-thousandth of a share of
Common Stock or other share or one-millionth of a share of Preferred Stock, as
the case may be. Notwithstanding the first sentence of this Section 11(e), any
adjustment required by this Section 11 shall be made no later than the earlier
of (i) three (3) years from the date of the transaction which mandates such
adjustment, or (ii) the Expiration Date.

                                      -16-

<PAGE>   20



                  (f)    If as a result of an adjustment made pursuant to
Section 11(a)(ii) or Section 13(a) hereof, the holder of any Right thereafter
exercised shall become entitled to receive any shares of capital stock other
than Preferred Stock, thereafter the number of such other shares so receivable
upon exercise of any Right and the Purchase Price thereof shall be subject to
adjustment from time to time in a manner and on terms as nearly equivalent as
practicable to the provisions with respect to the Preferred Stock contained in
Sections 11(a), (b), (c), (e), (g), (h), (i), (j), (k) and (m), and the
provisions of Sections 7, 9, 10, 13 and 14 hereof with respect to the Preferred
Stock shall apply on like terms to any such other shares.

                  (g)    All Rights originally issued by the Company subsequent
to any adjustment made to the Purchase Price hereunder shall evidence the right
to purchase, at the adjusted Purchase Price, the number of one one-thousandths
of a share of Preferred Stock purchasable from time to time hereunder upon
exercise of the Rights, all subject to further adjustment as provided herein.

                  (h)    Unless the Company shall have exercised its election as
provided in Section 11 (i), upon each adjustment of the Purchase Price as a
result of the calculations made in Sections 11(b) and (c), each Right
outstanding immediately prior to the making of such adjustment shall thereafter
evidence the right to purchase, at the adjusted Purchase Price, that number of
one one-thousandths of a share of Preferred Stock (calculated to the nearest
one-millionth) obtained by (i) multiplying (x) the number of one one-thousandths
of a share covered by a Right immediately prior to this adjustment, by (y) the
Purchase Price in effect immediately prior to such adjustment of the Purchase
Price, and (ii) dividing the product so obtained by the Purchase Price in effect
immediately after such adjustment of the Purchase Price.

                  (i)    The Company may elect on or after the date of any
adjustment of the Purchase Price to adjust the number of Rights, in lieu of any
adjustment in the number of one one-thousandths of a share of Preferred Stock
purchasable upon the exercise of a Right. Each of the Rights outstanding after
the adjustment in the number of Rights shall be exercisable for the number of
one one-thousandths of a share of Preferred Stock for which a Right was
exercisable immediately prior to such adjustment. Each Right held of record
prior to such adjustment of the number of Rights shall become that number of
Rights (calculated to the nearest one-ten-thousandth) obtained by dividing the
Purchase Price in effect immediately prior to adjustment of the Purchase Price
by the Purchase Price in effect immediately after adjustment of the Purchase
Price. The Company shall make a public announcement of its election to adjust
the number of Rights, indicating the record date for the adjustment, and, if
known at the time, the amount of the adjustment to be made. This record date may
be the date on which the Purchase Price is adjusted or any day thereafter, but,
if the Rights Certificates have been issued, shall be at least ten (10) days
later than the date of the public announcement. If Rights Certificates have been
issued, upon each adjustment of the number of Rights pursuant to this Section 11
(i), the Company shall, as promptly as practicable, cause to be distributed to
holders of record of Rights Certificates on such record date Rights Certificates
evidencing, subject to Section 14 hereof, the additional Rights to which such
holders shall be entitled as a result of such adjustment, or, at the option of
the Company, shall cause to be distributed to such holders of record in
substitution and replacement for the Rights Certificates held by such holders
prior to the date of adjustment, and upon

                                      -17-

<PAGE>   21



surrender thereof, if required by the Company, new Rights Certificates
evidencing all the Rights to which such holders shall be entitled after such
adjustment. Rights Certificates so to be distributed shall be issued, executed
and countersigned in the manner provided for herein (and may bear, at the option
of the Company, the adjusted Purchase Price) and shall be registered in the
names of the holders of record of Rights Certificates on the record date
specified in the public announcement.

                  (j)    Irrespective of any adjustment or change in the
Purchase Price or the number of one one-thousandths of a share of Preferred
Stock issuable upon the exercise of the Rights, the Rights Certificates
theretofore and thereafter issued may continue to express the Purchase Price per
one one-thousandths of a share and the number of one one-thousandths of a share
which were expressed in the initial Rights Certificates issued hereunder.

                  (k)    Before taking any action that would cause an adjustment
reducing the Purchase Price below the then stated value, if any, of the number
of one one-thousandths of a share of Preferred Stock issuable upon exercise of
the Rights, the Company shall take any corporate action which may, in the
opinion of its counsel, be necessary in order that the Company may validly and
legally issue fully paid and nonassessable such number of one one-thousandths of
a share of Preferred Stock at such adjusted Purchase Price.

                  (l)    In any case in which this Section 11 shall require that
an adjustment in the Purchase Price be made effective as of a record date for a
specified event, the Company may elect to defer until the occurrence of such
event the issuance to the holder of any Right exercised after such record date
the number of one one-thousandths of a share of Preferred Stock and other
capital stock or securities of the Company, if any, issuable upon such exercise
over and above the number of one one-thousandths of a share of Preferred Stock
and other capital stock or securities of the Company, if any, issuable upon such
exercise on the basis of the Purchase Price in effect prior to such adjustment;
provided, however, that the Company shall deliver to such holder a due bill or
other appropriate instrument evidencing such holder's right to receive such
additional shares (fractional or otherwise) or securities upon the occurrence of
the event requiring such adjustment.

                  (m)    Anything in this Section 11 to the contrary
notwithstanding, the Company shall be entitled to make such reductions in the
Purchase Price, in addition to those adjustments expressly required by this
Section 11, as and to the extent that in their good faith judgment the Board of
Directors of the Company shall determine to be advisable in order that any (i)
consolidation or subdivision of the Preferred Stock, (ii) issuance wholly for
cash of any shares of Preferred Stock at less than the current market price,
(iii) issuance wholly for cash of shares of Preferred Stock or securities which
by their terms are convertible into or exchangeable for shares of Preferred
Stock, (iv) stock dividends, or (v) issuance of rights, options or warrants
referred to in this Section 11, hereafter made by the Company to holders of its
Preferred Stock shall not be taxable to such stockholders.


                                      -18-

<PAGE>   22



                  (n)    The Company covenants and agrees that it shall not, at
any time after the Distribution Date, (i) consolidate with any other Person
(other than a Subsidiary of the Company in a transaction which complies with
Section 11(o) hereof), (ii) merge with or into any other Person (other than a
Subsidiary of the Company in a transaction which complies with Section 11(o)
hereof), or (iii) sell or transfer (or permit any Subsidiary to sell or
transfer), in one transaction, or a series of related transactions, assets or
earning power aggregating more than 50% of the assets or earning power of the
Company and its Subsidiaries (taken as a whole) to any other Person or Persons
(other than the Company and/or any of its Subsidiaries in one or more
transactions each of which complies with Section 11(o) hereof), if (x) at the
time of or immediately after such consolidation, merger or sale there are any
rights, warrants or other instruments or securities outstanding or agreements in
effect which would substantially diminish or otherwise eliminate the benefits
intended to be afforded by the Rights or (y) prior to, simultaneously with or
immediately after such consolidation, merger or sale, the stockholders of the
Person who constitutes, or would constitute, the "Principal Party" for purposes
of Section 13(a) hereof shall have received a distribution of Rights previously
owned by such Person or any of its Affiliates and Associates.

                  (o)    The Company covenants and agrees that, after the
Distribution Date, it will not, except as permitted by Section 23 or Section 26
hereof, take (or permit any Subsidiary to take) any action if at the time such
action is taken it is reasonably foreseeable that such action will diminish
substantially or otherwise eliminate the benefits intended to be afforded by the
Rights.

                  (p)    Anything in this Agreement to the contrary 
notwithstanding, in the event that the Company shall at any time after the
Record Date and prior to the Distribution Date (i) declare a dividend on the
outstanding shares of Common Stock payable in shares of Common Stock, (ii)
subdivide the outstanding shares of Common Stock, or (iii) combine the
outstanding shares of Common Stock into a smaller number of shares, the number
of Rights associated with each share of Common Stock then outstanding, or issued
or delivered thereafter but prior to the Distribution Date, shall be
proportionately adjusted so that the number of Rights thereafter associated with
each share of Common Stock following any such event shall equal the result
obtained by multiplying the number of Rights associated with each share of
Common Stock immediately prior to such event by a fraction the numerator of
which shall be the total number of shares of Common Stock outstanding
immediately prior to the occurrence of the event and the denominator of which
shall be the total number of shares of Common Stock outstanding immediately
following the occurrence of such event.

         Section 12.     Certificate of Adjusted Purchase Price or Number of
Shares. Whenever an adjustment is made as provided in Section 11 and Section 13
hereof, the Company shall (a) promptly prepare a certificate setting forth such
adjustment and a brief statement of the facts accounting for such adjustment,
(b) promptly file with the Rights Agent, and with each transfer agent for the
Preferred Stock and the Common Stock, a copy of such certificate, and (c) mail
or cause the Rights Agent to mail a brief summary thereof to each holder of a
Rights Certificate (or, if prior to the Distribution Date, to each holder of a
certificate representing shares of Common

                                      -19-

<PAGE>   23



Stock) in accordance with Section 25 hereof. The Rights Agent shall be fully
protected in relying on any such certificate and on any adjustment therein
contained.

         Section 13.     Consolidation, Merger or Sale or Transfer of Assets or
                         Earning Power.

                  (a)    In the event that, following the Stock Acquisition
Date, directly or indirectly, (x) the Company shall consolidate with, or merge
with and into, any other Person (other than a Subsidiary of the Company in a
transaction which complies with Section 11(o) hereof), and the Company shall not
be the continuing or surviving corporation of such consolidation or merger, (y)
any Person (other than a Subsidiary of the Company in a transaction which
complies with Section 11(o) hereof) shall consolidate with, or merge with or
into, the Company, and the Company shall be the continuing or surviving
corporation of such consolidation or merger and, in connection with such
consolidation or merger, all or part of the outstanding shares of Common Stock
shall be changed into or exchanged for stock or other securities of any other
Person or cash or any other property, or (z) the Company shall sell or otherwise
transfer (or one or more of its Subsidiaries shall sell or otherwise transfer),
in one transaction or a series of related transactions, assets or earning power
aggregating more than 50% of the assets or earning power of the Company and its
Subsidiaries (taken as a whole) to any Person or Persons (other than the Company
or any Subsidiary of the Company in one or more transactions each of which
complies with Section 11(o) hereof), then, and in each such case (except as may
be contemplated by Section 13(d) hereof), proper provision shall be made so
that: (i) each holder of a Right, except as provided in Section 7(e) hereof,
shall thereafter have the right to receive, upon the exercise thereof at the
then current Purchase Price in accordance with the terms of this Agreement, such
number of validly authorized and issued, fully paid, nonassessable and freely
tradeable shares of Common Stock of the Principal Party (as such term is
hereinafter defined), not subject to any liens, encumbrances, rights of first
refusal or other adverse claims, as shall be equal to the result obtained by (1)
multiplying the then current Purchase Price by the number of one one-thousandths
of a share of Preferred Stock for which a Right is exercisable immediately prior
to the first occurrence of a Section 13 Event (or, if the Section 11(a)(ii)
Event has occurred prior to the first occurrence of a Section 13 Event,
multiplying the number of such one one-thousandths of a share for which a Right
was exercisable immediately prior to the occurrence of the Section 11(a)(ii)
Event by the Purchase Price in effect immediately prior to such first
occurrence), and dividing that product (which, following the first occurrence of
a Section 13 Event, shall be referred to as the "Purchase Price" for each Right
and for all purposes of this Agreement) by (2) 50% of the current market price
(determined pursuant to Section 11(d)(i) hereof) per share of the Common Stock
of such Principal Party on the date of consummation of such Section 13 Event,
(ii) such Principal Party shall thereafter be liable for, and shall assume, by
virtue of such Section 13 Event, all the obligations and duties of the Company
pursuant to this Agreement; (iii) the term "Company" shall thereafter be deemed
to refer to such Principal Party, it being specifically intended that the
provisions of Section 11 hereof shall apply only to such Principal Party
following the first occurrence of a Section 13 Event; (iv) such Principal Party
shall take such steps (including, but not limited to, the reservation of a
sufficient number of shares of its Common Stock) in connection with the
consummation of any such transaction as may be necessary to assure that the
provisions hereof shall thereafter be applicable, as nearly as reasonably may
be, in relation to its shares of Common Stock thereafter deliverable upon the

                                      -20-

<PAGE>   24



exercise of the Rights; and (v) the provisions of Section 11(a)(ii) hereof shall
be of no effect following the first occurrence of any Section 13 Event.

                  (b)    "Principal Party" shall mean

                                    (i)      in the case of any transaction
         described in clause (x) or (y) of the first sentence of Section 13(a),
         the Person that is the issuer of any securities into which shares of
         Common Stock of the Company are converted in such merger or
         consolidation, and if no securities are so issued, the Person that is
         the other party to such merger or consolidation; and

                                    (ii)     in the case of any transaction
         described in clause (z) of the first sentence of Section 13(a), the
         Person that is the party receiving the greatest portion of the assets
         or earning power transferred pursuant to such transaction or
         transactions;

provided, however, that in any such case, (1) if the Common Stock of such Person
is not at such time and has not been continuously over the preceding twelve (12)
month period registered under Section 12 of the Exchange Act, and such Person is
a direct or indirect Subsidiary of another Person the Common Stock of which is
and has been so registered, "Principal Party" shall refer to such other Person;
and (2) in case such Person is a Subsidiary, directly or indirectly, of more
than one Person, the Common Stocks of two or more of which are and have been so
registered, "Principal Party" shall refer to whichever of such Persons is the
issuer of the Common Stock having the greatest aggregate market value.

                  (c)    The Company shall not consummate any such
consolidation, merger, sale or transfer unless the Principal Party shall have a
sufficient number of authorized shares of its Common Stock which have not been
issued or reserved for issuance to permit the exercise in full of the Rights in
accordance with this Section 13 and unless prior thereto the Company and such
Principal Party shall have executed and delivered to the Rights Agent a
supplemental agreement providing for the terms set forth in paragraphs (a) and
(b) of this Section 13 and further providing that, as soon as practicable after
the date of any consolidation, merger or sale of assets mentioned in paragraph
(a) of this Section 13, the Principal Party will

                                    (i)      prepare and file a registration
         statement under the Act, with respect to the Rights and the securities
         purchasable upon exercise of the Rights on an appropriate form, and
         will use its best efforts to cause such registration statement to (A)
         become effective as soon as practicable after such filing and (B)
         remain effective (with a prospectus at all times meeting the
         requirements of the Act) until the Expiration Date; and

                                    (ii)     will deliver to holders of the
         Rights historical financial statements for the Principal Party and each
         of its Affiliates which comply in all respects with the requirements
         for registration on Form 10 under the Exchange Act.

                                      -21-

<PAGE>   25



The provisions of this Section 13 shall similarly apply to successive mergers or
consolidations or sales or other transfers. In the event that a Section 13 Event
shall occur at any time after the occurrence of the Section 11(a)(ii) Event, the
Rights which have not theretofore been exercised shall thereafter become
exercisable in the manner described in Section 13(a).

                  (d)    Notwithstanding anything in this Agreement to the
contrary, Section 13 shall not be applicable to a transaction described in
subparagraphs (x) and (y) of Section 13(a) if (i) such transaction is
consummated with a Person or Persons who acquired shares of Common Stock
pursuant to a Qualifying Offer (or a wholly owned subsidiary of such Person or
Persons), (ii) the price per share of Common Stock offered in such transaction
is not less than the price per share of Common Stock paid to all holders of
shares of Common Stock whose shares were purchased pursuant to such tender offer
or exchange offer, and (iii) the form of consideration being offered to the
remaining holders of shares of Common Stock pursuant to such transaction is the
same as the form of consideration paid pursuant to such tender offer or exchange
offer. Upon consummation of any such transaction contemplated by this Section
13(d), all rights hereunder shall expire.

         Section 14.     Fractional Rights and Fractional Shares.

                  (a)    The Company shall not be required to issue fractions of
Rights, except prior to the Distribution Date as provided in Section 11(p)
hereof, or to distribute Rights Certificates which evidence fractional Rights.
In lieu of such fractional Rights, there shall be paid to the registered holders
of the Rights Certificates with regard to which such fractional Rights would
otherwise be issuable, an amount in cash equal to the same fraction of the
current market value of a whole Right. For purposes of this Section 14(a), the
current market value of a whole Right shall be the closing price of the Rights
for the Trading Day immediately prior to the date on which such fractional
Rights would have been otherwise issuable. The closing price of the Rights for
any day shall be the last sale price, regular way, or, in case no such sale
takes place on such day, the average of the closing bid and asked prices,
regular way, in either case as reported in the principal consolidated
transaction reporting system with respect to securities listed or admitted to
trading on The Nasdaq Stock Market's National Market or, if the Rights are not
listed or admitted to trading on The Nasdaq Stock Market's National Market, as
reported in the principal consolidated transaction reporting system with respect
to securities listed on the principal national securities exchange on which the
Rights are listed or admitted to trading, or if the Rights are not listed or
admitted to trading on any national securities exchange, the last quoted price
or, if not so quoted, the average of the high bid and low asked prices in the
over-the-counter market, as reported by NASDAQ or such other system then in use
or, if on any such date the Rights are not quoted by any such organization, the
average of the closing bid and asked prices as furnished by a professional
market maker making a market in the Rights selected by the Board of Directors of
the Company. If on any such date no such market maker is making a market in the
Rights the fair value of the Rights on such date as determined in good faith by
the Board of Directors of the Company shall be used.

                  (b)    The Company shall not be required to issue fractions of
shares of Preferred Stock (other than fractions which are integral multiples of
one one-thousandth of a share of

                                      -22-

<PAGE>   26



Preferred Stock), which may, at the option of the Company, be evidenced by
depositary receipts upon exercise of the Rights or to distribute certificates
which evidence fractional shares of Preferred Stock (other than fractions which
are integral multiples of one one-thousandth of a share of Preferred Stock). In
lieu of fractional shares of Preferred Stock that are not integral multiples of
one one-thousandth of a share of Preferred Stock, the Company may pay to the
registered holders of Rights Certificates at the time such Rights are exercised
as herein provided an amount in cash equal to the same fraction of the current
market value of one one-thousandth of a share of Preferred Stock. For purposes
of this Section 14(b), the current market value of one one-thousandth of a share
of Preferred Stock shall be one one-thousandth of the closing price of a share
of Preferred Stock (as determined pursuant to Section 11(d)(ii) hereof) for the
Trading Day immediately prior to the date of such exercise.

                  (c)    Following the occurrence of a Triggering Event, the
Company shall not be required to issue fractions of shares of Common Stock upon
exercise of the Rights or to distribute certificates which evidence fractional
shares of Common Stock. In lieu of fractional shares of Common Stock, the
Company may pay to the registered holders of Rights Certificates at the time
such Rights are exercised as herein provided an amount in cash equal to the same
fraction of the current market value of one (1) share of Common Stock. For
purposes of this Section 14(c), the current market value of one (1) share of
Common Stock shall be the closing price of one (1) share of Common Stock (as
determined pursuant to Section 11(d)(i) hereof) for the Trading Day immediately
prior to the date of such exercise.

                  (d)    The holder of a Right by the acceptance of the Rights
expressly waives his right to receive any fractional Rights or any fractional
shares upon exercise of a Right, except as permitted by this Section 14.

         Section 15.     Rights of Action. All rights of action in respect of
this Agreement are vested in the respective registered holders of the Rights
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Stock); and any registered holder of any Rights Certificate (or, prior to
the Distribution Date, of the Common Stock), without the consent of the Rights
Agent or of the holder of any other Rights Certificate (or, prior to the
Distribution Date, of the Common Stock), may, in his own behalf and for his own
benefit, enforce, and may institute and maintain any suit, action or proceeding
against the Company to enforce, or otherwise act in respect of, his right to
exercise the Rights evidenced by such Rights Certificate in the manner provided
in such Rights Certificate and in this Agreement. Without limiting the foregoing
or any remedies available to the holders of Rights, it is specifically
acknowledged that the holders of Rights would not have an adequate remedy at law
for any breach of this Agreement and shall be entitled to specific performance
of the obligations hereunder and injunctive relief against actual or threatened
violations of the obligations hereunder of any Person subject to this Agreement.

         Section 16.     Agreement of Rights Holders.  Every holder of a Right
by accepting the same consents and agrees with the Company and the Rights Agent
and with every other holder of a Right that:


                                      -23-

<PAGE>   27



                  (a)    prior to the Distribution Date, the Rights will be
transferable only in connection with the transfer of Common Stock;

                  (b)    after the Distribution Date, the Rights Certificates
are transferable only on the registry books of the Rights Agent if surrendered
at the principal office or offices of the Rights Agent designated for such
purposes, duly endorsed or accompanied by a proper instrument of transfer and
with the appropriate forms and certificates fully executed;

                  (c)    subject to Section 6(a) and Section 7(f) hereof, the
Company and the Rights Agent may deem and treat the person in whose name a
Rights Certificate (or, prior to the Distribution Date, the associated Common
Stock certificate) is registered as the absolute owner thereof and of the Rights
evidenced thereby (notwithstanding any notations of ownership or writing on the
Rights Certificates or the associated Common Stock certificate made by anyone
other than the Company or the Rights Agent) for all purposes whatsoever, and
neither the Company nor the Rights Agent, subject to the last sentence of
Section 7(e) hereof, shall be required to be affected by any notice to the
contrary; and

                  (d)    notwithstanding anything in this Agreement to the
contrary, neither the Company nor the Rights Agent shall have any liability to
any holder of a Right or other Person as a result of its inability to perform
any of its obligations under this Agreement by reason of any preliminary or
permanent injunction or other order, decree or ruling issued by a court of
competent jurisdiction or by a governmental, regulatory or administrative agency
or commission, or any statute, rule, regulation or executive order promulgated
or enacted by any governmental authority, prohibiting or otherwise restraining
performance of such obligation; provided, however, the Company must use its best
efforts to have any such order, decree or ruling lifted or otherwise overturned
as soon as possible.

         Section 17.     Rights Certificate Holder Not Deemed a Stockholder. No
holder, as such, of any Rights Certificate shall be entitled to vote, receive
dividends or be deemed for any purpose the holder of the number of one
one-thousandths of a share of Preferred Stock or any other securities of the
Company which may at any time be issuable on the exercise of the Rights
represented thereby, nor shall anything contained herein or in any Rights
Certificate be construed to confer upon the holder of any Rights Certificate, as
such, any of the rights of a stockholder of the Company or any right to vote for
the election of directors or upon any matter submitted to stockholders at any
meeting thereof, or to give or withhold consent to any corporate action, or to
receive notice of meetings or other actions affecting stockholders (except as
provided in Section 24 hereof), or to receive dividends or subscription rights,
or otherwise, until the Right or Rights evidenced by such Rights Certificate
shall have been exercised in accordance with the provisions hereof.

         Section 18.     Concerning the Rights Agent.

                  (a)    The Company agrees to pay to the Rights Agent
reasonable compensation for all services rendered by it hereunder and, from time
to time, on demand of the Rights Agent, its reasonable expenses and counsel fees
and disbursements and other disbursements incurred in

                                      -24-

<PAGE>   28



the administration and execution of this Agreement and the exercise and
performance of its duties hereunder. The Company shall indemnify the Rights
Agent for, and to hold it harmless against, any loss, liability, or expense
("Loss") arising out of or in connection with its duties under this Agreement,
including the costs and expenses of defending itself against any Loss, unless
such Loss shall have been determined by a court of competent jurisdiction to be
a result of the Right Agent's gross negligence or intentional misconduct. The
obligations of the Company under this section shall survive the termination of
this Agreement.

                  (b)    The Rights Agent shall be protected and shall incur no
liability for or in respect of any action taken, suffered or omitted by it in
connection with its administration of this Agreement in reliance upon any Rights
Certificate or certificate for Common Stock or for other securities of the
Company, instrument of assignment or transfer, power of attorney, endorsement,
affidavit, letter, notice, direction, consent, certificate, statement, or other
paper or document believed by it to be genuine and to be signed, executed and,
where necessary, verified or acknowledged, by the proper Person or Persons.

         Section 19.     Merger or Consolidation or Change of Name of Rights.

                  (a)    Any corporation into which the Rights Agent or any
successor Rights Agent may be merged or with which it may be consolidated, or
any corporation resulting from any merger or consolidation to which the Rights
Agent or any successor Rights Agent shall be a party, or any corporation
succeeding to the corporate trust or stock transfer business of the Rights Agent
or any successor Rights Agent, shall be the successor to the Rights Agent under
this Agreement without the execution or filing of any paper or an further act on
the part of any of the parties hereto; provided, however, that such corporation
would be eligible for appointment as a successor Rights Agent under the
provisions of Section 21 hereof. In case at the time such successor Rights Agent
shall succeed to the agency created by this Agreement, any of the Rights
Certificates shall have been countersigned but not delivered, any such successor
Rights Agent may adopt the countersignature of a predecessor Rights Agent and
deliver such Rights Certificates so countersigned; and in case at that time any
of the Rights Certificates shall not have been countersigned, any successor
Rights Agent may countersign such Rights Certificates either in the name of the
predecessor or in the name of the successor Rights Agent; and in all such cases
such Rights Certificates shall have the full force provided in the Rights
Certificates and in this Agreement.

                  (b)    In case at any time the name of the Rights Agent shall
be changed and at such time any of the Rights Certificates shall have been
countersigned but not delivered, the Rights Agent may adopt the countersignature
under its prior name and deliver Rights Certificates so countersigned; and in
case at that time any of the Rights Certificates shall not have been
countersigned, the Rights Agent may countersign such Rights Certificates either
in its prior name or in its changed name; and in all such cases such Rights
Certificates shall have the full force provided in the Rights Certificates and
in this Agreement.


                                      -25-

<PAGE>   29



         Section 20.     Duties of Rights Agent. The Rights Agent undertakes the
duties and obligations imposed by this Agreement upon the following terms and
conditions, by all of which the Company and the holders of Rights Certificates,
by their acceptance thereof, shall be bound:

                  (a)    The Rights Agent may consult with legal counsel (who
may be legal counsel for the Company), and the opinion of such counsel shall be
full and complete authorization and protection to the Rights Agent as to any
action taken or omitted by it in good faith and in accordance with such opinion.

                  (b)    Whenever in the performance of its duties under this
Agreement the Rights Agent shall deem it necessary or desirable that any fact or
matter (including, without limitation, the identity of any Acquiring Person and
the determination of "current market price") be proved or established by the
Company prior to taking or suffering any action hereunder, such fact or matter
(unless other evidence in respect thereof be herein specifically prescribed) may
be deemed to be conclusively proved and established by a certificate signed by
the Chairman of the Board, the President, any Vice President, the Treasurer, any
Assistant Treasurer, the Secretary or any Assistant Secretary of the Company and
delivered to the Rights Agent; and such certificate shall be full authorization
to the Rights Agent for any action taken or suffered in good faith by it under
the provisions of this Agreement in reliance upon such certificate.

                  (c)    The Rights Agent shall be liable hereunder only for its
own gross negligence, bad faith or intentional misconduct. In no case, however,
will the Rights Agent be liable for special, indirect, incidental or
consequential loss or damages of any kind whatsoever (including but not limited
to lost profits), even if the Rights Agent has been advised of the possibility
of such damages.

                  (d)    The Rights Agent shall not be liable for or by reason
of any of the statements of fact or recitals contained in this Agreement or in
the Rights Certificates or be required to verify the same (except as to its
countersignature on such Rights Certificates), but all such statements and
recitals are and shall be deemed to have been made by the Company only.

                  (e)    The Rights Agent shall not be under any responsibility
in respect of the validity of this Agreement or the execution and delivery
hereof (except the due execution hereof by the Rights Agent) or in respect of
the validity or execution of any Rights Certificate (except its countersignature
thereof); nor shall it be responsible for any breach by the Company of any
covenant or condition contained in this Agreement or in any Rights Certificate;
nor shall it be responsible for any adjustment required under the provisions of
Section 11 or Section 13 hereof or responsible for the manner, method or amount
of any such adjustment or the ascertaining of the existence of facts that would
require any such adjustment (except with respect to the exercise of Rights
evidenced by Rights Certificates after actual notice of any such adjustment);
nor shall it by any act hereunder be deemed to make any representation or
warranty as to the authorization or reservation of any shares of Common Stock or
Preferred Stock to be issued pursuant to this Agreement or any Rights
Certificate or as to whether any shares of Common Stock or Preferred Stock will,
when so issued, be validly authorized and issued, fully paid and nonassessable.


                                      -26-

<PAGE>   30



                  (f)    The Company agrees that it will perform, execute,
acknowledge and deliver or cause to be performed, executed, acknowledged and
delivered all such further and other acts, instruments and assurances as may
reasonably be required by the Rights Agent for the carrying out or performing by
the Rights Agent of the provisions of this Agreement.

                  (g)    The Rights Agent is hereby authorized and directed to
accept instructions with respect to the performance of its duties hereunder from
the Chairman of the Board, the President, any Vice President, the Secretary, any
Assistant Secretary, the Treasurer or any Assistant Treasurer of the Company,
and to apply to such officers for advice or instructions in connection with its
duties, and it shall not be liable for any action taken or suffered to be taken
by it in good faith in accordance with instructions of any such officer.

                  (h)    The Rights Agent and any stockholder, director, officer
or employee of the Rights Agent may buy, sell or deal in any of the Rights or
other securities of the Company or become pecuniarily interested in any
transaction in which the Company may be interested, or contract with or lend
money to the Company or otherwise act as fully and freely as though it were not
Rights Agent under this Agreement. Nothing herein shall preclude the Rights
Agent from acting in any other capacity for the Company or for any other legal
entity.

                  (i)    The Rights Agent may execute and exercise any of the
rights or powers hereby vested in it or perform any duty hereunder either itself
or by or through its attorneys or agents, and the Rights Agent shall not be
answerable or accountable for any act, default, neglect or misconduct of any
such attorneys or agents or for any loss to the Company resulting from any such
act, default, neglect or misconduct; provided, however, reasonable care was
exercised in the selection and continued employment thereof.

                  (j)    No provision of this Agreement shall require the Rights
Agent to expend or risk its own funds or otherwise incur any financial liability
in the performance of any of its duties hereunder or in the exercise of its
rights if there shall be reasonable grounds for believing that repayment of such
funds or adequate indemnification against such risk or liability is not
reasonably assured to it.

                  (k)    If, with respect to any Right Certificate surrendered
to the Rights Agent for exercise or transfer, the certificate attached to the
form of assignment or form of election to purchase, as the case may be, has
either not been completed or indicates an affirmative response to clause 1
and/or 2 thereof, the Rights Agent shall not take any further action with
respect to such requested exercise of transfer without first consulting with the
Company.

         Section 21.     Change of Rights Agent. The Rights Agent or any
successor Rights Agent may resign and be discharged from its duties under this
Agreement upon thirty (30) days' notice in writing mailed to the Company, and to
each transfer agent of the Common Stock and Preferred Stock, by registered or
certified mail, and to the holders of the Rights Certificates by first-class
mail. The Company may remove the Rights Agent or any successor Rights Agent upon
thirty (30) days' notice in writing, mailed to the Rights Agent or successor
Rights Agent, as the case may be, and to each transfer agent of the Common Stock
and Preferred Stock, by registered or certified

                                      -27-

<PAGE>   31



mail, and to the holders of the Rights Certificates by first-class mail. If the
Rights Agent shall resign or be removed or shall otherwise become incapable of
acting, the Company shall appoint a successor to the Rights Agent. If the
Company shall fail to make such appointment within a period of thirty (30) days
after giving notice of such removal or after it has been notified in writing of
such resignation or incapacity by the resigning or incapacitated Rights Agent or
by the holder of a Rights Certificate (who shall, with such notice, submit his
Rights Certificate for inspection by the Company), then any registered holder of
any Rights Certificate may apply to any court of competent jurisdiction for the
appointment of a new Rights Agent. Any successor Rights Agent, whether appointed
by the Company or by such a court, shall be either (a) a corporation organized
and doing business under the laws of the United States or of the State of New
York (or of any other state of the United States so long as such corporation is
authorized to do business as a banking institution in the State of New York), in
good standing, having a principal office in the State of New York, which is
authorized under such laws to exercise corporate trust or stock transfer powers
and is subject to supervision or examination by federal or state authority and
which either has or is an affiliate of a corporation which has at the time of
its appointment as Rights Agent a combined capital and surplus of at least
$100,000,000, or (b) an affiliate of such a corporation. After appointment, the
successor Rights Agent shall be vested with the same powers, rights, duties and
responsibilities as if it had been originally named as Rights Agent without
further act or deed; but the predecessor Rights Agent shall deliver and transfer
to the successor Rights Agent any property at the time held by it hereunder, and
execute and deliver any further assurance, conveyance, act or deed necessary for
the purpose. Not later than the effective date of any such appointment, the
Company shall file notice thereof in writing with the predecessor Rights Agent
and each transfer agent of the Common Stock and the Preferred Stock, and mail a
notice thereof in writing to the registered holders of the Rights Certificates.
Failure to give any notice provided for in this Section 21, however, or any
defect therein, shall not affect the legality or validity of the resignation or
removal of the Rights Agent or the appointment of the successor Rights Agent, as
the case may be.

         Section 22.     Issuance of New Rights Certificates. Notwithstanding
any of the provisions of this Agreement or of the Rights to the contrary, the
Company may, at its option, issue new Rights Certificates evidencing Rights in
such form as may be approved by its Board of Directors to reflect any adjustment
or change in the Purchase Price and the number or kind or class of shares or
other securities or property purchasable under the Rights Certificates made in
accordance with the provisions of this Agreement. In addition, in connection
with the issuance or sale of shares of Common Stock following the Distribution
Date and prior to the redemption or expiration of the Rights, the Company (a)
shall, with respect to shares of Common Stock so issued or sold pursuant to the
exercise of stock options or under any employee plan or arrangement, granted or
awarded as of the Distribution Date, or upon the exercise, conversion or
exchange of securities hereinafter issued by the Company, and (b) may, in any
other case, if deemed necessary or appropriate by the Board of Directors of the
Company, issue Rights Certificates representing the appropriate number of Rights
in connection with such issuance or sale; provided, however, that (i) no such
Rights Certificate shall be issued if, and to the extent that, the Company shall
be advised by counsel that such issuance would create a significant risk of
material adverse tax consequences to the Company or the Person to whom such
Rights Certificate

                                      -28-

<PAGE>   32



would be issued, and (ii) no such Rights Certificate shall be issued if, and to
the extent that, appropriate adjustment shall otherwise have been made in lieu
of the issuance thereof.

         Section 23.     Redemption and Termination.

                  (a)    The Board of Directors of the Company may, at its
option, at any time prior to the earlier of (i) the close of business on the
tenth Business Day following the Stock Acquisition Date or (ii) the Final
Expiration Date, redeem all but not less than all the then outstanding Rights at
a redemption price of $.001 per Right, as such amount may be appropriately
adjusted to reflect any stock split, stock dividend or similar transaction
occurring after the date hereof (such redemption price being hereinafter
referred to as the "Redemption Price"). Such redemption of the Rights by the
Company may be made effective at such time, on such basis and with such
conditions as the Board of Directors in its sole discretion may establish.
Notwithstanding anything contained in this Agreement to the contrary, the Rights
shall not be exercisable after the occurrence of the Section 11(a)(ii) Event
until such time as the Company's right of redemption hereunder has expired. The
Company may, at its option, pay the Redemption Price in cash, shares of Common
Stock (based on the "current market price," as defined in Section 11(d)(i)
hereof, of the Common Stock at the time of redemption) or any other form of
consideration deemed appropriate by the Board of Directors.

                  (b)    Immediately upon the action of the Board of Directors
of the Company ordering the redemption of the Rights, evidence of which shall
have been filed with the Rights Agent and without any further action and without
any notice, the right to exercise the Rights will terminate and the only right
thereafter of the holders of Rights shall be to receive the Redemption Price for
each Right so held. Promptly after the action of the Board of Directors ordering
the redemption of the Rights, the Company shall give notice of such redemption
to the Rights Agent and the holders of the then outstanding Rights by mailing
such notice to all such holders at each holder's last address as it appears upon
the registry books of the Rights Agent or, prior to the Distribution Date, on
the registry books of the transfer agent for the Common Stock. Any notice which
is mailed in the manner herein provided shall be deemed given, whether or not
the holder receives the notice. Each such notice of redemption will state the
method by which the payment of the Redemption Price will be made.

         Section 24.     Notice of Certain Events.

                  (a)    In case the Company shall propose, at any time after
the Distribution Date, (i) to pay any dividend payable in stock of any class to
the holders of Preferred Stock or to make any other distribution to the holders
of Preferred Stock (other than a regular quarterly cash dividend out of earnings
or retained earnings of the Company), or (ii) to offer to the holders of
Preferred Stock rights or warrants to subscribe for or to purchase any
additional shares of Preferred Stock or shares of stock of any class or any
other securities, rights or options, or (iii) to effect any reclassification of
its Preferred Stock (other than a reclassification involving only the
subdivision of outstanding shares of Preferred Stock), or (iv) to effect any
consolidation or merger into or with any other Person (other than a Subsidiary
of the Company in a transaction which complies with Section 11(o) hereof), or to
effect any sale or other transfer (or to permit one or

                                      -29-

<PAGE>   33



more of its Subsidiaries to effect any sale or other transfer), in one
transaction or a series of related transactions, of more than 50% of the assets
or earning power of the Company and its Subsidiaries (taken as a whole) to any
other Person or Persons (other than the Company and/or any of its Subsidiaries
in one or more transactions each of which complies with Section 11(o) hereof),
or (v) to effect the liquidation, dissolution or winding up of the Company,
then, in each such case, the Company shall give to each holder of a Rights
Certificate, to the extent feasible and in accordance with Section 25 hereof, a
notice of such proposed action, which shall specify the record date for the
purposes of such stock dividend, distribution of rights or warrants, or the date
on which such reclassification, consolidation, merger, sale, transfer,
liquidation, dissolution, or winding up is to take place and the date of
participation therein by the holders of the shares of Preferred Stock, if any
such date is to be fixed, and such notice shall be so given in the case of any
action covered by clause (i) or (ii) above at least twenty (20) days prior to
the record date for determining holders of the shares of Preferred Stock for
purposes of such action, and in the case of any such other action, at least
twenty (20) days prior to the date of the taking of such proposed action or the
date of participation therein by the holders of the shares of Preferred Stock
whichever shall be the earlier.

                  (b)    In case the Section 11(a)(ii) Event shall occur, (i)
the Company shall as soon as practicable thereafter give to each holder of a
Rights Certificate, to the extent feasible and in accordance with Section 25
hereof, a notice of the occurrence of such event, which shall specify the event
and the consequences of the event to holders of Rights under Section 11(a)(ii)
hereof, and (ii) all references in the preceding paragraph to Preferred Stock
shall be deemed thereafter to refer to Common Stock and/or, if appropriate,
other securities.

         Section 25.     Notices. Notices or demands authorized by this
Agreement to be given or made by the Rights Agent or by the holder of any Rights
Certificate to or on the Company shall be sufficiently given or made if sent by
first-class mail, postage prepaid, addressed (until another address is filed in
writing with the Rights Agent) as follows:

                  Eagle Geophysical, Inc.
                  50 Briar Hollow Lane, 6th Floor West
                  Houston, Texas 77027
                  Attention: Corporate Secretary

Subject to the provisions of Section 21, any notice or demand authorized by this
Agreement to be given or made by the Company or by the holder of any Rights
Certificate to or on the Rights Agent shall be sufficiently given or made if
sent by first-class mail, postage prepaid, addressed (until another address is
filed in writing with the Company) as follows:

                  ChaseMellon Shareholder Services, L.L.C.
                  450 W. 33rd
                  New York, New York 10001
                  Attention: Vice President



                                      -30-

<PAGE>   34



Notices or demands authorized by this Agreement to be given or made by the
Company or the Rights Agent to the holder of any Rights Certificate (or, if
prior to the Distribution Date, to the holder of certificates representing
shares of Common Stock) shall be sufficiently given or made if sent by
first-class mail, postage prepaid, addressed to such holder at the address of
such holder as shown on the registry books of the Company.

         Section 26.     Supplements and Amendments. Prior to the Distribution
Date and subject to the penultimate sentence of this Section 26, the Company and
the Rights Agent shall, if the Company so directs, supplement or amend any
provision of this Agreement without the approval of any holders of certificates
representing shares of Common Stock. From and after the Distribution Date and
subject to the penultimate sentence of this Section 26, the Company and the
Rights Agent shall, if the Company so directs, supplement or amend this
Agreement without the approval of any holders of Rights Certificates in order
(i) to cure any ambiguity, (ii) to correct or supplement any provision contained
herein which may be defective or inconsistent with any other provisions herein,
(iii) to shorten or lengthen any time period hereunder, or (iv) to change or
supplement the provisions hereunder in any manner which the Company may deem
necessary or desirable and which shall not adversely affect the interests of the
holders of Rights Certificates (other than an Acquiring Person or an Affiliate
or Associate of an Acquiring Person); provided, this Agreement may not be
supplemented or amended to lengthen, pursuant to clause (iii) of this sentence,
(A) a time period relating to when the Rights may be redeemed at such time as
the Rights are not then redeemable, or (B) any other time period unless such
lengthening is for the purpose of protecting, enhancing or clarifying the rights
of, and/or the benefits to, the holders of Rights. Upon the delivery of a
certificate from an appropriate officer of the Company which states that the
proposed supplement or amendment is in compliance with the terms of this Section
26, the Rights Agent shall execute such supplement or amendment. Notwithstanding
anything contained in this Agreement to the contrary, no supplement or amendment
shall be made which changes the Redemption Price, the Final Expiration Date, the
Purchase Price or the number of one one-thousandths of a share of Preferred
Stock for which a Right is exercisable; provided, however, that at any time
prior to (i) the Stock Acquisition Date or (ii) the date that a tender or
exchange offer by any Person (other than the Company, any Subsidiary of the
Company, any employee benefit plan of the Company or any Subsidiary of the
Company, or any Person or entity organized, appointed or established by the
Company for or pursuant to the terms of any such plan) is first published or
sent or given within the meaning of Rule 14d-2(a) of the General Rules and
Regulations under the Exchange Act, if upon consummation thereof, such Person
would be the Beneficial Owner of 15 % or more of the shares of Common Stock then
outstanding and if at the time of any amendment or supplement such tender or
exchange offer has not expired or been terminated, the Board of Directors of the
Company may amend this Agreement to increase the Purchase Price or extend the
Final Expiration Date. Prior to the Distribution Date, the interests of the
holders of Rights shall be deemed coincident with the interests of the holders
of Common Stock.

         Section 27.     Successors. All the covenants and provisions of this
Agreement by or for the benefit of the Company or the Rights Agent shall bind
and inure to the benefit of their respective successors and assigns hereunder.


                                      -31-

<PAGE>   35



         Section 28.     Determinations and Actions by the Board of Directors,
etc. For all purposes of this Agreement, any calculation of the number of shares
of Common Stock outstanding at any particular time, including for purposes of
determining the particular percentage of such outstanding shares of Common Stock
of which any Person is the Beneficial Owner, shall be made in accordance with
the last sentence of Rule 13d-3(d)(1)(i) of the General Rules and Regulations
under the Exchange Act. The Board of Directors of the Company shall have the
exclusive power and authority to administer this Agreement and to exercise all
rights and powers specifically granted to the Board or to the Company, or as may
be necessary or advisable in the administration of this Agreement, including,
without limitation, the right and power to (i) interpret the provisions of this
Agreement, and (ii) make all determinations deemed necessary or advisable for
the administration of this Agreement (including a determination to redeem or not
redeem the Rights or to amend the Agreement). All such actions, calculations,
interpretations and determinations (including, for purposes of clause (y) below,
all omissions with respect to the foregoing) which are done or made by the Board
in good faith, shall (x) be final, conclusive and binding on the Company, the
Rights Agent, the holders of the Rights and all other parties, and (y) not
subject the Board to any liability to the holders of the Rights.

         Section 29.     Benefits of this Agreement. Nothing in this Agreement
shall be construed to give to any Person other than the Company, the Rights
Agent and the registered holders of the Rights Certificates (and, prior to the
Distribution Date, registered holders of the Common Stock) any legal or
equitable right, remedy or claim under this Agreement; but this Agreement shall
be for the sole and exclusive benefit of the Company, the Rights Agent and the
registered holders of the Rights Certificates (and, prior to the Distribution
Date, registered holders of the Common Stock).

         Section 30.     Severability. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated;
provided, however, that notwithstanding anything in this Agreement to the
contrary, if any such term, provision, covenant or restriction is held by such
court or authority to be invalid, void or unenforceable and the Board of
Directors of the Company determines in its good faith judgment that severing the
invalid language from this Agreement would adversely affect the purpose or
effect of this Agreement, the right of redemption set forth in Section 23 hereof
shall be reinstated and shall not expire until the close of business on the
tenth Business Day following the date of such determination by the Board of
Directors.

         Section 31.     Governing Law. This Agreement, each Right and each
Rights Certificate issued hereunder shall be deemed to be a contract made under
the laws of the State of Delaware and for all purposes shall be governed by and
construed in accordance with the laws of such State applicable to contracts made
and to be performed entirely within such State; provided, however, that all
provisions providing regarding the rights, duties and obligations of the Rights
Agent shall be governed by and construed in accordance with the laws of the
State of New York applicable to contracts made and to be performed entirely with
such State.


                                      -32-

<PAGE>   36



         Section 32.     Counterparts. This Agreement may be executed in any
number of counterparts and each of such counterparts shall for all purposes be
deemed to be an original, and all such counterparts shall together constitute
but one and the same instrument.

         Section 33.     Descriptive Headings. Descriptive headings of the
several Sections of this Agreement are inserted for convenience only and shall
not control or affect the meaning or construction of any of the provisions
hereof.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and their respective corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.

Attest:                                      EAGLE GEOPHYSICAL, INC.


By   /s/ RICHARD W. MCNAIRY                  By   /s/ JAY N. SILVERMAN
  ---------------------------------            ---------------------------------
Name:        Richard W. McNairy                   Jay N. Silverman, President
     ------------------------------               and Chief Executive Officer
Title:     CFO
      -----------------------------


Attest:                                      CHASEMELLON SHAREHOLDER SERVICES,
                                             L.L.C.


By                                           By   /s/ JANIS E. DAUGHERTY
  ---------------------------------            ---------------------------------
Name:                                             Janis E. Daugherty,
     ------------------------------               Relationship Manager
Title:
      -----------------------------

                                      -33-

<PAGE>   37



                                                                       Exhibit A

               CERTIFICATE OF DESIGNATIONS OF RIGHTS, PREFERENCES
                                AND PRIVILEGES OF
                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK
                           OF EAGLE GEOPHYSICAL, INC.

         The undersigned, Jay N. Silverman and Richard W. McNairy do hereby
certify:

         1.    That they are the duly elected and acting President and
Secretary, respectively, of Eagle Geophysical, Inc., a Delaware corporation (the
"Corporation").

         2.    That pursuant to the authority conferred upon the Board of
Directors by the Certificate of Incorporation of the said Corporation, the said
Board of Directors on August 4, 1998 adopted the following resolution creating a
series of 100,000 shares of Preferred Stock designated as Series A Junior
Participating Preferred Stock:

         "RESOLVED, that pursuant to the authority vested in the Board of
Directors of the corporation by the Certificate of Incorporation, the Board of
Directors does hereby provide for the issue of a series of Preferred Stock of
the Corporation and does hereby fix and herein state and express the
designations, powers, preferences and relative and other special rights and the
qualifications, limitations and restrictions of such series of Preferred Stock
as follows:

         1.    Designation and Amount. The shares of such series shall be
designated as "Series A Junior Participating Preferred Stock," par value $.01
per share (the "Series A Junior Preferred Stock"), and the number of shares
constituting such series shall be 100,000.

         2.    Dividends and Distributions. (a) Subject to the prior and
superior rights of the holders of any shares of any series of Preferred Stock
ranking prior and superior to the shares of Series A Junior Preferred Stock with
respect to dividends, the holders of shares of Series A Junior Preferred Stock
in preference to the holders of Common Stock and of any other junior stock,
shall be entitled to receive, when, as and if declared by the Board of Directors
out of funds legally available therefor, dividends payable quarterly on the
first day of January, April, July and October (each such date being referred to
herein as a "Quarterly Dividend Payment Date"), commencing on the first
Quarterly Dividend Payment Date after the first issuance of a share or fraction
of a share of Series A Junior Preferred Stock, in an amount per share (rounded
to the nearest cent) equal to the greater of (a) $1.00 or (b) subject to the
provision for adjustment hereinafter set forth, 1,000 times the aggregate per
share amount of all cash dividends, and 1,000 times the aggregate per share
amount (payable in kind) of all non-cash dividends or other distributions other
than a dividend payable in shares of Common Stock or a subdivision of the
outstanding shares of Common Stock (by reclassification or otherwise), declared
on the Common Stock, since the immediately preceding Quarterly Dividend Payment
Date, or, with respect to the first Quarterly Dividend Payment Date, since the
first issuance of any share or fraction of a share of Series A Junior Preferred
Stock. In the event the Corporation shall at any time after the record date for
the

                                       A-1

<PAGE>   38



initial distribution of the Corporation's Preferred Stock Purchase Rights
pursuant to the Rights Agreement between the Corporation and ChaseMellon
Shareholder Services, L.L.C., as Rights Agent (the "Rights Declaration Date"),
(i) declare any dividend on Common Stock payable in shares of Common Stock, (ii)
subdivide the outstanding Common Stock, or (iii) combine the outstanding Common
Stock into a smaller number of shares, then in each such case the amount to
which holders of shares of Series A Junior Preferred Stock were entitled
immediately prior to such event under clause (b) of the preceding sentence shall
be adjusted by multiplying such amount by a fraction, the numerator of which is
the number of shares of Common Stock outstanding immediately after such event
and the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

         (b)   The Corporation shall declare a dividend or distribution on the
Series A Junior Preferred Stock as provided in paragraph (a) above immediately
after it declares a dividend or distribution on the Common Stock (other than a
dividend payable in shares of Common Stock); provided that, in the event no
dividend or distribution shall have been declared on the Common Stock during the
period between any Quarterly Dividend Payment Date and the next subsequent
Quarterly Dividend Payment Date, a dividend of $1.00 per share on the Series A
Junior Preferred Stock shall nevertheless be payable on such subsequent
Quarterly Dividend Payment Date.

         (c)   Dividends shall begin to accrue and be cumulative on outstanding
shares of Series A Junior Preferred Stock from the Quarterly Dividend Payment
Date next preceding the date of issue of such shares of Series A Junior
Preferred Stock, unless the date of issue of such shares is prior to the record
date for the first Quarterly Dividend Payment Date, in which case dividends on
such shares shall begin to accrue from the date of issue of such shares, or
unless the date of issue is a Quarterly Dividend Payment Date or is a date after
the record date for the determination of holders of shares of Series A Junior
Preferred Stock entitled to receive a quarterly dividend and before such
Quarterly Dividend Payment Date, in either of which events such dividends shall
begin to accrue and be cumulative from such Quarterly Dividend Payment Date.
Accrued but unpaid dividends shall not bear interest. Dividends paid on the
shares of Series A Junior Preferred Stock in an amount less than the total
amount of such dividends at the time accrued and payable on such shares shall be
allocated pro rata on a share-by-share basis among all such shares at the time
outstanding. The Board of Directors may fix a record date for the determination
of holders of shares of Series A Junior Preferred Stock entitled to receive
payment of a dividend or distribution declared thereon, which record date shall
be no more than 60 days prior to the date fixed for the payment thereof.

         3.    Voting Rights. The holders of shares of Series A Junior Preferred
Stock shall have the following voting rights:

         (a)   Subject to the provision for adjustment hereinafter set forth,
each share of Series A Junior Preferred Stock shall entitle the holder thereof
to 1,000 votes on all matters submitted to a vote of the stockholders of the
Corporation. In the event the Corporation shall at any time after the Rights
Declaration Date (i) declare any dividend on Common Stock payable in shares of
Common Stock, (ii) subdivide the outstanding Common Stock, or (iii) combine the
outstanding

                                       A-2

<PAGE>   39



Common Stock into a smaller number of shares, then in each such case the number
of votes per share to which holders of shares of Series A Junior Preferred Stock
were entitled immediately prior to such event shall be adjusted by multiplying
such number by a fraction, the numerator of which is the number of shares of
Common Stock outstanding immediately after such event and the denominator of
which is the number of shares of Common Stock that were outstanding immediately
prior to such event.

         (b)   Except as otherwise provided herein, or under applicable law, the
holders of shares of Series A Junior Preferred Stock and the holders of shares
of Common Stock shall vote together as one class on all matters submitted to a
vote of stockholders of the Corporation.

         (c)   Except as set forth herein or as otherwise provided in the
Certificate of Incorporation, holders of Series A Junior Preferred Stock shall
have no special voting rights and their consent shall not be required (except to
the extent they are entitled to vote with holders of Common Stock as set forth
herein) for taking any corporate action.

         4.    Certain Restrictions. (a) Whenever quarterly dividends or other
dividends or distributions payable on the Series A Junior Preferred Stock as
provided in Section 2 are in arrears, thereafter and until all accrued and
unpaid dividends and distributions, whether or not declared, on shares of Series
A Junior Preferred Stock outstanding shall have been paid in full, the
Corporation shall not:

                  (i)    declare or pay or set apart for payment any dividends
         or make any other distributions on, or redeem or purchase or otherwise
         acquire, directly or indirectly, for consideration any shares of any
         class of stock of the Corporation ranking junior (either as to
         dividends or upon liquidation, dissolution or winding up) to the Series
         A Junior Preferred Stock;

                  (ii)   declare or pay dividends on or make any other
         distributions on any shares of stock ranking on a parity (either as to
         dividends or upon liquidation, dissolution or winding up) with the
         Series A Junior Preferred Stock, except dividends paid ratably on the
         Series A Junior Preferred Stock and all such parity stock on which
         dividends are payable or in arrears in proportion to the total amounts
         to which the holders of all such shares are then entitled;

                  (iii)  redeem or purchase or otherwise acquire for
         consideration shares of any stock ranking on a parity (either as to
         dividends or upon liquidation, dissolution or winding up) with the
         Series A Junior Preferred Stock, provided that the Corporation may at
         any time redeem, purchase or otherwise acquire shares of any such
         parity stock in exchange for shares of any stock of the Corporation
         ranking junior (either as to dividends or upon dissolution, liquidation
         or winding up) to the Series A Junior Preferred Stock; or

                  (iv)   purchase or otherwise acquire for consideration any
         shares of Series A Junior Preferred Stock, or any shares of stock
         ranking on a parity with the Series A Junior

                                       A-3

<PAGE>   40



         Preferred Stock, except in accordance with a purchase offer made in
         writing or by publication (as determined by the Board of Directors) to
         all holders of such shares upon such terms as the Board of Directors,
         after consideration of the respective annual dividend rates and other
         relative rights and preferences of the respective series and classes,
         shall determine in good faith will result in fair and equitable
         treatment among the respective series or classes.

                  (b)    The Corporation shall not permit any subsidiary of the
Corporation to purchase or otherwise acquire for consideration any shares of
stock of the Corporation unless the Corporation could, under paragraph (a) of
this Section 4, purchase or otherwise acquire such shares at such time and in
such manner.

         5.    Reacquired Shares. Any shares of Series A Junior Preferred Stock
purchased or otherwise acquired by the Corporation in any manner whatsoever
shall be retired and cancelled promptly after the acquisition thereof. All such
shares shall upon their cancellation become authorized but unissued shares of
Preferred Stock and may be reissued as part of a new series of Preferred Stock
to be created by resolution or resolutions of the Board of Directors, subject to
the conditions and restrictions on issuance set forth herein.

         6.    Liquidation, Dissolution or Winding Up. (a) Upon any voluntary or
involuntary liquidation, dissolution or winding up of the Corporation, no
distribution shall be made to the holders of shares of stock ranking junior
(either as to dividends or upon liquidation, dissolution or winding up) to the
Series A Junior Preferred Stock unless, prior thereto, the holders of shares of
Series A Junior Preferred Stock shall have received an amount equal to 1,000
times the par value per share, plus an amount equal to accrued and unpaid
dividends and distributions thereon, whether or not declared, to the date of
such payment (the "Series A Liquidation Preference"). Following the payment of
the full amount of the Series A Liquidation Preference, no additional
distributions shall be made to the holders of shares of Series A Junior
Preferred Stock unless, prior thereto, the holders of shares of Common Stock
shall have received an amount per share (the "Common Adjustment") equal to the
quotient obtained by dividing (i) the Series A Liquidation Preference by (ii)
1,000 (as appropriately adjusted as set forth in paragraph (c) below to reflect
such events as stock splits, stock dividends and recapitalizations with respect
to the Common Stock) (such number in clause (ii) being hereinafter referred to
as the "Adjustment Number"). Following the payment of the full amount of the
Series A Liquidation Preference and the Common Adjustment in respect of all
outstanding shares of Series A Junior Preferred Stock and Common Stock,
respectively, holders of Series A Junior Preferred Stock and holders of shares
of Common Stock shall receive their ratable and proportionate share of the
remaining assets to be distributed in the ratio of the Adjustment Number to 1
with respect to such Series A Junior Preferred Stock and Common Stock, on a per
share basis, respectively.

         (b)   In the event, however, that there are not sufficient assets
available to permit payment in full of the Series A Liquidation Preference and
the liquidation preferences of all other series of Preferred Stock, if any,
which rank on a parity with the Series A Junior Preferred Stock, then such
remaining assets shall be distributed ratably to the holders of all such shares
in

                                       A-4

<PAGE>   41



proportion to their respective liquidation preferences. In the event, however,
that there are not sufficient assets available to permit payment in full of the
Common Adjustment, then such remaining assets shall be distributed ratably to
the holders of Common Stock.

         (c)   In the event the Corporation shall at any time after the Rights
Declaration Date (i) declare any dividend on Common Stock payable in shares of
Common Stock, (ii) subdivide the outstanding Common Stock, or (iii) combine the
outstanding Common Stock into a smaller number of shares, then in each such case
the Adjustment Number in effect immediately prior to such event shall be
adjusted by multiplying such Adjustment Number by a fraction, the numerator of
which is the number of shares of Common Stock outstanding immediately after such
event and the denominator of which is the number of shares of Common Stock that
were outstanding immediately prior to such event.

         7.    Consolidation, Merger, Share Exchange, etc. In case the
Corporation shall enter into any consolidation, merger, share exchange,
combination or other transaction in which the shares of Common Stock are
exchanged for or changed into other stock or securities, cash and/or any other
property, then in any such case the shares of Series A Junior Preferred Stock
shall at the same time be similarly exchanged or changed in an amount per share
(subject to the provision for adjustment hereinafter set forth) equal to 1,000
times the aggregate amount of stock, securities, cash and/or any other property
(payable in kind), as the case may be, into which or for which each share of
Common Stock is changed or exchanged. In the event the Corporation shall at any
time after the Rights Declaration Date (i) declare any dividend on Common Stock
payable in shares of Common Stock, (ii) subdivide the outstanding Common Stock,
or (iii) combine the outstanding Common Stock into a smaller number of shares,
then in each such case the amount set forth in the preceding sentence with
respect to the exchange or change of shares of Series A Junior Preferred Stock
shall be adjusted by multiplying such amount by a fraction, the numerator of
which is the number of shares of Common Stock outstanding immediately after such
event and the denominator of which is the number of shares of Common Stock that
were outstanding immediately prior to such event.

         8.    No Redemption. The shares of Series A Junior Preferred Stock
shall not be redeemable.

         9.    Ranking. The Series A Junior Preferred Stock shall rank junior to
all other series of the Corporation's Preferred Stock as to the payment of
dividends and the distribution of assets, unless the terms of any such series
shall provide otherwise.

         10.   Amendment. The Certificate of Incorporation shall not be amended
in any manner which would materially alter or change the powers, preferences or
special rights of the Series A Junior Preferred Stock so as to affect them
adversely without the affirmative vote of the holders of two-thirds or more of
the outstanding shares of Series A Junior Preferred Stock, voting together as a
single voting group.


                                       A-5

<PAGE>   42



         11.   Fractional Shares. Series A Junior Preferred Stock may be issued
in fractions of a share which shall entitle the holder, in proportion to such
holder's fractional shares, to exercise voting rights, receive dividends,
participate in distributions and to have the benefit of all other rights of
holders of Series A Junior Preferred Stock.


                                       A-6

<PAGE>   43



                                                                       Exhibit B

                          [Form of Rights Certificate]


Certificate No. R-                                             __________ Rights


         NOT EXERCISABLE AFTER SEPTEMBER ___, 2008 OR EARLIER IF REDEEMED BY
         THE COMPANY. THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF
         THE COMPANY, AT $.001 PER RIGHT ON THE TERMS SET FORTH IN THE RIGHTS
         AGREEMENT. UNDER CERTAIN CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN
         ACQUIRING PERSON (AS SUCH TERM IS DEFINED IN THE RIGHTS AGREEMENT) AND
         ANY SUBSEQUENT HOLDER OF SUCH RIGHTS MAY BECOME NULL AND VOID. [THE
         RIGHTS REPRESENTED BY THIS RIGHTS CERTIFICATE ARE OR WERE BENEFICIALLY
         OWNED BY A PERSON WHO WAS OR BECAME AN ACQUIRING PERSON OR AN AFFILIATE
         OR ASSOCIATE OF AN ACQUIRING PERSON (AS SUCH TERMS ARE DEFINED IN THE
         RIGHTS AGREEMENT). ACCORDINGLY, THIS RIGHTS CERTIFICATE AND THE RIGHTS
         REPRESENTED HEREBY MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES
         SPECIFIED IN SECTION 7(e) OF SUCH AGREEMENT.](1)



                               Rights Certificate

                             EAGLE GEOPHYSICAL, INC.


         This certifies that____________ , or registered assigns, is the
registered owner of the number of Rights set forth above, each of which entitles
the owner thereof, subject to the terms, provisions and conditions of the Rights
Agreement, dated as of August ___, 1998 (the "Rights Agreement"), between Eagle
Geophysical, Inc., a Delaware corporation (the "Company"), and ChaseMellon
Shareholder Services, L.L.C., a limited liability company organized under the
laws of State of ________________ (the "Rights Agent"), to purchase from the
Company at any time prior to 5:00 P.M. (New York City time) on September ___,
2008 at the office or offices of the Rights Agent designated for such purpose,
or its successors as Rights Agent, one one-thousandth of a fully paid,
nonassessable share of Series A Junior Participating Preferred Stock (the
"Preferred Stock") of the Company, at a purchase price of $______ per one
one-thousandth

- ------------------

         (1) The portion of the legend in brackets shall be inserted only if
applicable and shall replace the preceding sentence.

                                       B-1

<PAGE>   44

of a share (the "Purchase Price"), upon presentation and surrender of this
Rights Certificate with the Form of Election to Purchase and related Certificate
duly executed. The Purchase Price shall be paid, at the election of the holder,
in cash or shares of Common Stock of the Company having an equivalent value. The
number of Rights evidenced by this Rights Certificate (and the number of shares
which may be purchased upon exercise thereof) set forth above, and the Purchase
Price per share set forth above, are the number and Purchase Price as of
September ___, 1998, based on the Preferred Stock as constituted at such date.

         Upon the occurrence of the Section 11(a)(ii) Event (as such term is
defined in the Rights Agreement), if the Rights evidenced by this Rights
Certificate are beneficially owned by (i) an Acquiring Person or an Affiliate or
Associate of any such Acquiring Person (as such terms are defined in the Rights
Agreement), (ii) a transferee of any such Acquiring Person, Associate or
Affiliate, or (iii) under certain circumstances specified in the Rights
Agreement, a transferee of a person who, after such transfer, became an
Acquiring Person, or an Affiliate or Associate of an Acquiring Person, such
Rights shall become null and void and no holder hereof shall have any right with
respect to such Rights from and after the occurrence of the Section 11(a)(ii)
Event.

         As provided in the Rights Agreement, the Purchase Price and the number
and kind of shares of Preferred Stock or other securities, which may be
purchased upon the exercise of the Rights evidenced by this Rights Certificate
are subject to modification and adjustment upon the happening of certain events,
including Triggering Events.

         This Rights Certificate is subject to all of the terms, provisions and
conditions of the Rights Agreement, which terms, provisions and conditions are
hereby incorporated herein by reference and made a part hereof and to which
Rights Agreement reference is hereby made for a full description of the rights,
limitations of rights, obligations, duties and immunities hereunder of the
Rights Agent, which limitations of rights include the temporary suspension of
the exercisability of such Rights under the specific circumstances set forth in
the Rights Agreement. Copies of the Rights Agreement are on file at the
above-mentioned office of the Rights Agent and are also available upon written
request to the Rights Agent.

         This Rights Certificate, with or without other Rights Certificates,
upon surrender at the principal office or offices of the Rights Agent designated
for such purpose, may be exchanged for another Rights Certificate or Rights
Certificates of like tenor and date evidencing Rights entitling the holder to
purchase a like aggregate number of one one-thousandths of a share of Preferred
Stock as the Rights evidenced by the Rights Certificate or Rights Certificates
surrendered shall have entitled such holder to purchase. If this Rights
Certificate shall be exercised in part, the holder shall be entitled to receive
upon surrender hereof another Rights Certificate or Rights Certificates for the
number of whole Rights not exercised.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this Certificate may be redeemed by the Company at its option at a redemption
price of $.001 per Right at any time prior to the earlier of the close of
business on (i) the tenth Business Day following the Stock Acquisition Date (as
such time period may be extended pursuant to the Rights Agreement), and (ii) the
Final Expiration Date.

                                       B-2

<PAGE>   45



         The Company is not required to issue fractional shares of Preferred
Stock upon the exercise of any Right or Rights evidenced hereby (other than
fractions which are integral multiples of one one-thousandth of a share of
Preferred Stock, which may, at the election of the Company, be evidenced by
depositary receipts), but in lieu thereof a cash payment may be made, as
provided in the Rights Agreement.

         No holder of this Rights Certificate shall be entitled to vote or
receive dividends or be deemed for any purpose the holder of shares of Preferred
Stock or of any other securities of the Company which may at any time be
issuable on the exercise hereof, nor shall anything contained in the Rights
Agreement or herein be construed to confer upon the holder hereof, as such, any
of the rights of a stockholder of the Company or any right to vote for the
election of directors or upon any matter submitted to stockholders at any
meeting thereof, or to give or withhold consent to any corporate action, or, to
receive notice of meetings or other actions affecting stockholders (except as
provided in the Rights Agreement), or to receive dividends or subscription
rights, or otherwise, until the Right or Rights evidenced by this Rights
Certificate shall have been exercised as provided in the Rights Agreement.

         This Rights Certificate shall not be valid or obligatory for any
purpose until it shall have been countersigned by the Rights Agent.

         WITNESS the facsimile signature of the proper officers of the Company
and its corporate seal.


Dated as of __________, _____


Attest:                                      EAGLE GEOPHYSICAL, INC.


By                                           By
  ---------------------------------            ---------------------------------
Name:                                        Name:
     ------------------------------               ------------------------------
Title:                                       Title:
      -----------------------------                -----------------------------


Countersigned:

CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


By
  ---------------------------------
         Authorized Signature



                                       B-3

<PAGE>   46



                  [Form of Reverse Side of Rights Certificate]


                               FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
              holder desires to transfer the Rights Certificate.)


FOR VALUE RECEIVED _____________________________________________________________
hereby sells, assigns and transfers unto________________________________________
________________________________________________________________________________
                  (Please print name and address of transferee)

________________________________________________________________________________
this Rights Certificate, together with all right, title and interest therein,
and does hereby irrevocably constitute and appoint __________________ Attorney,
to transfer the within Rights Certificate on the books of the within-named
Company, with full power of substitution.


Date:_____________________, ______

                                        ----------------------------------------
                                                       Signature


Signature Guaranteed:






                                       B-4

<PAGE>   47



                                   Certificate


         The undersigned hereby certifies by checking the appropriate boxes
that:

                  (1)    this Rights Certificate [ ] is [ ] is not being sold,
assigned and transferred by or on behalf of a Person who is or was an Acquiring
Person or an Affiliate or Associate of any such Acquiring Person (as such terms
are defined pursuant to the Rights Agreement); and

                  (2)    after due inquiry and to the best knowledge of the
undersigned, it [ ] did [ ]did not acquire the Rights evidenced by this Rights
Certificate from any Person who is, was or subsequently became an Acquiring
Person or an Affiliate or Associate of an Acquiring Person.


Dated:_______________, ____

                                        ----------------------------------------
                                                       Signature

Signature Guaranteed:


                                     NOTICE


                  The signature to the foregoing Assignment and Certificate must
correspond to the name as written upon the face of this Rights Certificate in
every particular, without alteration or enlargement or an change whatsoever.




                                       B-5

<PAGE>   48



                          FORM OF ELECTION TO PURCHASE

    (To be executed if holder desires to exercise Rights represented by the
                              Rights Certificate.)


To: EAGLE GEOPHYSICAL, INC.

         The undersigned hereby irrevocably elects to exercise ____________
Rights represented by this Rights Certificate to purchase the shares of
Preferred Stock issuable upon the exercise of the Rights (or such other
securities of the Company or of any other person which may be issuable upon the
exercise of the Rights) and requests that certificates for such shares be issued
in the name of and delivered to:

Please insert social security
or other identifying number____________________________

________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________


         If such number of Rights shall not be all the Rights evidenced by this
Rights Certificate, a new Rights Certificate for the balance of such Rights
shall be registered in the name of and delivered to:


Please insert social security
or other identifying number____________________________


________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________

________________________________________________________________________________

Dated:_____________________, _____

                                        ----------------------------------------
                                                       Signature
Signature Guaranteed:

                                       B-6

<PAGE>   49



Signature Guaranteed:

                                   Certificate

         The undersigned hereby certifies by checking the appropriate boxes
that:

         (1)   the Rights evidenced by this Rights Certificate [ ] are [ ] are
not being exercised by or on behalf of a Person who is or was an Acquiring
Person or an Affiliate or Associate of any such Acquiring Person (as such terms
are defined pursuant to the Rights Agreement); and

         (2)   after due inquiry and to the best knowledge of the undersigned,
it [ ] did [ ] did not acquire the Rights evidenced by this Rights Certificate
from any Person who is, was or became an Acquiring Person or an Affiliate or
Associate of an Acquiring Person.


Dated:________________, ____

                                        ----------------------------------------
                                                       Signature


Signature Guaranteed:

                                     NOTICE

                  The signature to the foregoing Election to Purchase and
Certificate must correspond to the name as written upon the face of this Rights
Certificate in every particular, without alteration or enlargement or any change
whatsoever.





                                       B-7

<PAGE>   50



                                                                       Exhibit C

                          SUMMARY OF RIGHTS TO PURCHASE
                                PREFERRED SHARES

         On August 4, 1998, the Board of Directors of Eagle Geophysical, Inc.
(the "Company") declared a dividend of one preferred share purchase right (a
"Right") for each outstanding share of common stock, par value $.01 per share
(the "Common Stock"), of the Company. The dividend is payable on August 31, 1998
(the "Record Date"), to the stockholders of record on that date. Each Right
entitles the registered holder to purchase from the Company one one-thousandth
of a share of Series A Junior Participating Preferred Stock, $.01 par value per
share (the "Series A Preferred Stock"), of the Company at a price of $46 per one
one-thousandth of a share of Series A Preferred Stock (the "Purchase Price"),
subject to adjustment. The complete description and terms of the Rights are set
forth in a Rights Agreement dated as of August 24, 1998, as the same may be
amended from time to time (the "Rights Agreement"), between the Company and
ChaseMellon Shareholder Services, L.L.C., as Rights Agent (the "Rights Agent").
The following description of the Rights Agreement is a summary of the material
terms thereof and is qualified in its entirety by reference to the complete text
of the Rights Agreement.

         Upon distribution, the Rights will be attached to all outstanding
shares of Common Stock and will be represented by the certificates representing
such shares. No separate certificates evidencing the Rights (the "Rights
Certificates") will be distributed prior to the Distribution Date (as defined
below). The Rights will separate from the Common Stock and a "Distribution Date"
will occur upon the earlier of (i) 10 business days following a public
announcement that a person or group of affiliated or associated persons (an
"Acquiring Person") has acquired, or obtained the right to acquire, beneficial
ownership of 15% or more of the outstanding shares of Common Stock (the "Stock
Acquisition Date"), or (ii) 10 business days (or such later date as the Board of
Directors shall determine) following the commencement of a tender or exchange
offer that would result in a person or group beneficially owning 15% or more of
such outstanding shares of Common Stock (the "Tender Offer Date"). The term
"Acquiring Person" is defined in the Rights Agreement to exclude Seitel, Inc.,
together with its executive officers and directors, for so long as they are the
beneficial owner of no more than 18% of the outstanding shares of Common Stock.
Until the Distribution Date, (i) the Rights will be evidenced by the Common
Stock certificates and will be transferred with and only with such Common Stock
certificates, (ii) Common Stock certificates will contain a notation
incorporating the Rights Agreement by reference, and (iii) the surrender for
transfer of any certificates for Common Stock outstanding will also constitute
the transfer of the Rights associated with the Common Stock represented by such
certificates. Pursuant to the Rights Agreement, the Company reserves the right
to require prior to the occurrence of a Triggering Event (as defined below)
that, upon any exercise of Rights, a number of Rights be exercised so that only
whole shares of Series A Preferred Stock will be issued (or fractions that are
integral multiples of one one-thousandth of a share).


                                       C-1

<PAGE>   51



         The Rights are not exercisable until the Distribution Date and will
expire at the close of business on August 4, 2008, or such later date as the
Board of Directors establishes under certain circumstances, unless earlier
redeemed by the Company as described below.

         As soon as practicable after the Distribution Date, Rights Certificates
will be mailed to holders of record of Common Stock as of the close of business
on the Distribution Date and, thereafter, the separate Rights Certificates alone
will represent the Rights. Except as otherwise determined by the Board of
Directors, only shares of Common Stock outstanding prior to the Distribution
Date will be issued with Rights.

         Each share of Series A Preferred Stock purchased upon exercise of the
Rights will be entitled to a minimum preferential quarterly dividend payment
equal to the greater of (i) $1.00 per share, and (ii) 1,000 times the dividend,
if any, declared per share of Common Stock. In the event of liquidation, the
holders of the Series A Preferred Stock will be entitled to a minimum
preferential liquidation payment equal to 1,000 times the par value per share
plus an amount equal to accrued and unpaid dividends and distributions to the
date of such payment. Each share of Series A Preferred Stock will have 1,000
votes and will vote together with the Common Stock. In the event of any merger,
consolidation or other transaction in which shares of Common Stock are
exchanged, each share of Series A Preferred Stock will be entitled to receive
1,000 times the amount per share of Common Stock received in such merger,
consolidation or other transaction. These rights are protected by customary
antidilution provisions. The shares of Series A Preferred Stock will, if issued,
be junior to any other series of Preferred Stock which may be authorized and
issued by the Company, unless the terms of any such other series provide
otherwise. Because of the nature of the Series A Preferred Stock's dividend,
liquidation and voting rights, the value of one one-thousandth of a share of
Series A Preferred Stock purchasable upon the exercise of each Right should
approximate the value of one share of Common Stock.

         In the event that any Person becomes the beneficial owner of 15% or
more of the then outstanding shares of Common Stock (unless such acquisition is
made pursuant to a tender or exchange offer for all outstanding shares of Common
Stock, upon terms and conditions determined by a majority of the directors to be
in the best interests of the Company and its stockholders (a "Qualifying
Offer")), each holder of a Right (other than an Acquiring Person, certain
related parties and transferees) will thereafter have the right to receive, upon
exercise, Common Stock (or, in certain circumstances, cash, property or other
securities of the Company), having a value equal to two times the exercise price
of the Right. For example, at an exercise price of $46 per Right, each Right not
owned by an Acquiring Person (or by certain related parties or transferees)
following the event set forth above would entitle its holder to purchase $92
worth of Common Stock (or other consideration, as noted above) for $46. Assuming
that the Common Stock had a per share market price of $30 at such time, the
holder of each valid Right would be entitled to purchase 3.06 shares of Common
Stock for $46. The Rights are not exercisable following the occurrence of any of
the events described above until such time as the Rights are no longer
redeemable by the Company as described below. Notwithstanding any of the
foregoing, following the occurrence of any of the events set forth in this
paragraph, all Rights that are, or

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<PAGE>   52



(under certain circumstances specified in the Rights Agreement) were,
beneficially owned by any Acquiring Person will be null and void.

         In the event that at any time following the Stock Acquisition Date, (i)
the Company is acquired in a merger or business combination transaction in which
it is not the surviving corporation (other than a merger consummated pursuant to
a Qualifying Offer); (ii) the Company is the surviving corporation in a business
combination transaction (other than such a transaction consummated pursuant to a
Qualifying Offer) but all or part of the outstanding shares of Common Stock are
changed or exchanged for stock or other securities of any person or cash or any
other property; or (iii) more than 50% of the combined assets or earning power
is sold or transferred (in each case other than certain consolidations with,
mergers with and into, or sales of assets or earning power by or to subsidiaries
of the Company as specified in the Rights Agreement), each holder of a Right
(except Rights which have previously been voided as set forth above) shall
thereafter have the right to receive, upon exercise thereof, common stock of the
acquiring company having a value equal to two times the exercise price of the
Right. The events described in this paragraph and in the preceding paragraph are
referred to as the "Triggering Events."

         In order to prevent dilution, the Purchase Price payable, the number
and kind of shares covered by each Right and the number of Rights outstanding
are subject to adjustment from time to time (x) in the event of a stock dividend
on, or a subdivision, combination or reclassification of, the Series A Preferred
Stock, (y) if holders of the Series A Preferred Stock are granted certain rights
or warrants to subscribe for Series A Preferred Stock or securities convertible
into Series A Preferred Stock at less than the current market price of the
Series A Preferred Stock, or (z) upon the distribution to holders of the Series
A Preferred Stock of evidences of indebtedness, cash (excluding regular
quarterly cash dividends), assets (other than dividends payable in Series A
Preferred Stock) or subscription rights or warrants (other than those referred
to in clause (y) above).

         With certain exceptions, no adjustments in the Purchase Price will be
required until cumulative adjustments amount to at least 1% of the Purchase
Price. No fractional shares of Series A Preferred Stock are required to be
issued (other than fractions which are integral multiples of one one-thousandth
of a share of Series A Preferred Stock) and, in lieu thereof, the Company may
make an adjustment in cash based on the market price of the Series A Preferred
Stock on the trading day prior to the date of exercise.

         At any time until ten business days following the Stock Acquisition
Date, the Company may redeem the Rights in whole, but not in part, at a price of
$.001 per Right (payable in cash, shares of Common Stock or other consideration
deemed appropriate by the Board of Directors). The redemption of the Rights may
be made effective at such time on such basis with such conditions as the Board
of Directors in its sole discretion may establish. Immediately upon any
redemption of the Rights, the right to exercise the Rights will terminate and
the only right of the holders of Rights will be to receive the $.001 redemption
price.


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<PAGE>   53



         Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive dividends.

         Any of the provisions of the Rights Agreement may be amended by the
Board of Directors of the Company prior to the Distribution Date, other than the
redemption price and the number of one one-thousandths of a share of Series A
Preferred Stock for which a right is exercisable, and the Purchase Price may not
be reduced. After the Distribution Date, the provisions of the Rights Agreement
may be amended by the Board in order to cure any ambiguity, to make changes
which do not adversely affect the interests of holders of Rights or to shorten
or lengthen any time period under the Rights Agreement, except that no amendment
to adjust the time period governing redemption may be made at such time as the
Rights are not redeemable. The Final Expiration Date (as defined in the Rights
Agreement) may be changed and the Purchase Price may be increased at any time
prior to a Stock Acquisition Date or a Tender Offer Date.

         THIS SUMMARY DESCRIPTION OF THE RIGHTS DOES NOT PURPORT TO BE COMPLETE
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE RIGHTS AGREEMENT, WHICH IS
HEREBY INCORPORATED BY REFERENCE.

         A copy of the Rights Agreement has been filed with the Securities and
Exchange Commission as an Exhibit to a Registration Statement on Form 8-A. A
copy of the Rights Agreement is available free of charge from the Company. This
summary description of the Rights does not purport to be complete and is
qualified in its entirety by reference to the Rights Agreement, which is hereby
incorporated herein by reference.


                                       C-4


<PAGE>   1


                                                                    EXHIBIT 99.1

FOR IMMEDIATE RELEASE

                                                                 Company Contact
                                                              Richard W. McNairy
                                                                  (713) 881-2800

                             EAGLE GEOPHYSICAL, INC.
                         ADOPTS STOCKHOLDER RIGHTS PLAN

         HOUSTON, TEXAS August 24, 1998 -- Eagle Geophysical, Inc. (Nasdaq:EGEO)
announced today that its Board of Directors has adopted a Stockholder Rights
Plan in which rights to purchase shares of junior preferred stock will be
distributed as a dividend at the rate of one Right for each share of common
stock.

         Each Right will entitle holders of the Company's common stock to buy
one-one thousandth of a share of Eagle's Series A Junior Participating Preferred
Stock at an exercise price of $46. The Rights will be exercisable only if a
person or group acquires beneficial ownership of 15% or more of Eagle's common
stock or announces a tender or exchange offer upon consummation of which such
person or group would beneficially own 15% or more of the Eagle's common stock.
Furthermore, if any person becomes the beneficial owner of 15% or more of
Eagle's common stock, each Right not owned by such person or related parties
will enable its holder to purchase, at the Right's then-current exercise price,
shares of common stock of the Company having a value of twice the Right's
exercise price. The Company will generally be entitled to redeem the Rights at
$.001 per Right at any time until the 10th day following public announcement
that a 15% position has been acquired. A more complete description of the
Stockholder Rights Plan is contained in a Form 8-K filed with the Securities and
Exchange Commission today, as well as a Summary of Rights to be mailed to each
of the stockholders of Eagle.

         Mr. Jay N. Silverman, President and Chief Executive Officer of Eagle,
said "We believe that this Plan protects the interests of our stockholders in
the event that they and Eagle are confronted with coercive or unfair takeover
tactics, including offers that do not treat all stockholders equally and the
acquisition in the open market of shares constituting control without offering
fair value to all stockholders that could impair the Board's ability to
represent the stockholders' interests fully."

         Mr. Silverman stressed, however, that "The Plan is not intended to
prevent an acquisition of the Company on terms that are favorable and fair to
all stockholders, and will not do so. The Plan is designed to deal with the very
serious problem of unilateral actions by hostile persons that are calculated to
deprive the Company's board and its stockholders of their ability to manage the
destiny of the Company."

         Mr. Silverman also noted that "The Stockholder Rights Plan was not
adopted in response to any specific effort to acquire control of the Company and
the Company's directors are not aware of any such effort."

         The dividend distribution will be made on August 31, 1998 to
stockholders of record on that date. The Rights will expire on August 4, 2008.

         Eagle Geophysical, Inc. is a leading provider of onshore and offshore
seismic data acquisition services to the petroleum industry.


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